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Mapped: Each Region’s Median Age Since 1950

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Mapped: Each Region’s Median Age Since 1950

Over the last 70 years, the global population has gotten older. Since 1950, the worldwide median age has gone from 25 years to 33 years.

Yet, despite an overall increase globally, not all regions have aged at the same rate. For instance, Europe’s median age has grown by 14 years, while Africa’s has only increased by 1 year.

Today’s animated map uses data from the UN Population Index to highlight the changes in median age over the last 70 years, and to visualize the differences between each region. We also explain why some regions skew older than others.

Factors that Affect a Region’s Median Age

Before diving into the numbers, it’s important to understand the key factors that influence a region’s median age:

  1. Fertility Rate
    The average number of children that women give birth to in their reproductive years. The higher the fertility rate, the younger a population skews. Since 1950, the global fertility rate has dropped by 50%.
  2. Mortality Rate
    The number of deaths in a particular region, usually associated with a certain demographic or period in time. For example, global child mortality (children who have died under five years of age) has been on the decline, which has contributed to an increase in the average life expectancy across the globe.
  3. Migration
    International migration may lower a region’s population since migrants are usually younger or working age. In 2019, there were 272 million migrants globally.

The Change in Median Age

As mentioned, not all regions are created equal. Here’s how much the median age has changed in each region since 1950:

The Highs

Regions that have seen the most growth and generally skew older are Latin America, followed by Europe and Asia.

Interestingly, Asia’s notable increase is largely influenced by Japan, which has the oldest population on the planet. The country has seen a significant increase in median age since 1950—it’s gone from 22 to 48 years in 2020. This can be explained by its considerably low fertility rate, which is 1.4 births per woman—that’s less than half the global average.

But why is Japan’s fertility rate so low? There are more women in the workforce than ever before, and they are too busy to take on the burden of running a household. Yet, while women are more prosperous than ever, the workforce in general has taken a hit.

Japan’s recession in the early 1990s led to an increase in temporary jobs, which has had lasting effects on the region’s workforce—in 2019, about 1 in 5 men were working contract jobs with little stability or job growth.

The Lows

In contrast to Asia’s growth, Africa has seen the lowest increase in median age. The region’s population skews young, with over 60% of its population under the age of 25.

Africa’s young population can be explained by its high birth rate of 4.4 births per woman. It also has a relatively low life expectancy, at 65 years for women and 61 years for men. To put things into perspective, the average life expectancy across the globe is 75 years for women and 70 years for men.

Another trend worth noting is Oceania’s relatively small growth. It’s interesting because the region’s fertility rate is almost on par with the global average, at 2.4 births per woman, and the average life expectancy doesn’t differ much from the norm either.

The most likely reason for Oceania’s stagnant growth in median age is its high proportion of migrants. In 2019, the country had 8.9 million international migrants, which is 21% of its overall population. In contrast, migrants only make up 10% of North America’s population.

Unique Challenges for Every Region

Age composition has significant impacts on a region’s labor force, health services, and economic productivity.

Regions with a relatively high median age face several challenges such as shrinking workforce, higher taxes, and increasing healthcare costs. On the other end of the spectrum, regions with a younger population face increased demand for educational services and a lack of employment opportunities.

As our population worldwide continues to grow and age, it’s important to bring attention to issues that impact our global community. World Population Day on July 11, 2020, was established by the UN to try and solve worldwide population issues.

“The 2030 Agenda for Sustainable Development is the world’s blueprint for a better future for all on a healthy planet. On World Population Day, we recognize that this mission is closely interrelated with demographic trends including population growth, aging, migration, and urbanization.”

– UN Secretary-General António Guterres

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Politics

Mapped: The World’s Legal Government Systems

The political regimes of the world’s countries have changed over centuries. This map charts the nine government systems that rule the world today.

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Mapping The World’s Legal Government Systems

With over 200 countries existing across the world with unique cultures and traditions, one might assume that there are hundreds of types of government systems. But both historically and in modern times, that’s not the case.

Even while political regimes across these countries have changed over time, they’ve largely followed a few different types of governance. Today, every country can ultimately be classified into just nine broad forms of government systems.

This map by Truman Du uses information from Wikipedia to map the government systems that rule the world today.

Countries By Type of Government

It’s important to note that this map charts government systems according to each country’s legal framework.

Many countries have constitutions stating their de jure or legally recognized system of government, but their de facto or realized form of governance may be quite different.

Here is a list of the stated government system of UN member states and observers as of January 2023:

CountryConstitutional formHead of state
AfghanistanProvisionaln/a
AlbaniaRepublicCeremonial
AlgeriaRepublicExecutive
AndorraConstitutional monarchyCeremonial
AngolaRepublicExecutive
Antigua and BarbudaConstitutional monarchyCeremonial
ArgentinaRepublicExecutive
ArmeniaRepublicCeremonial
AustraliaConstitutional monarchyCeremonial
AustriaRepublicCeremonial
AzerbaijanRepublicExecutive
Bahamas, TheConstitutional monarchyCeremonial
BahrainConstitutional monarchyExecutive
BangladeshRepublicCeremonial
BarbadosRepublicCeremonial
BelarusRepublicExecutive
BelgiumConstitutional monarchyCeremonial
BelizeConstitutional monarchyCeremonial
BeninRepublicExecutive
BhutanConstitutional monarchyExecutive
BoliviaRepublicExecutive
Bosnia and HerzegovinaRepublicCeremonial
BotswanaRepublicExecutive
BrazilRepublicExecutive
BruneiAbsolute monarchyExecutive
BulgariaRepublicCeremonial
Burkina FasoProvisionaln/a
BurundiRepublicExecutive
CambodiaConstitutional monarchyCeremonial
CameroonRepublicExecutive
CanadaConstitutional monarchyCeremonial
Cape VerdeRepublicExecutive
Central African RepublicRepublicExecutive
ChadProvisionaln/a
ChileRepublicExecutive
China, People's Republic ofRepublicCeremonial
ColombiaRepublicExecutive
ComorosRepublicExecutive
Congo, Democratic Republic of theRepublicExecutive
Congo, Republic of theRepublicExecutive
Costa RicaRepublicExecutive
Côte d'IvoireRepublicExecutive
CroatiaRepublicCeremonial
CubaRepublicExecutive
CyprusRepublicExecutive
Czech RepublicRepublicCeremonial
DenmarkConstitutional monarchyCeremonial
DjiboutiRepublicExecutive
DominicaRepublicCeremonial
Dominican RepublicRepublicExecutive
East TimorRepublicExecutive
EcuadorRepublicExecutive
EgyptRepublicExecutive
El SalvadorRepublicExecutive
Equatorial GuineaRepublicExecutive
EritreaRepublicExecutive
EstoniaRepublicCeremonial
EswatiniAbsolute monarchyExecutive
EthiopiaRepublicCeremonial
FijiRepublicCeremonial
FinlandRepublicCeremonial
FranceRepublicExecutive
GabonRepublicExecutive
Gambia, TheRepublicExecutive
GeorgiaRepublicCeremonial
GermanyRepublicCeremonial
GhanaRepublicExecutive
GreeceRepublicCeremonial
GrenadaConstitutional monarchyCeremonial
GuatemalaRepublicExecutive
GuineaProvisionaln/a
Guinea-BissauRepublicExecutive
GuyanaRepublicExecutive
HaitiRepublicExecutive
HondurasRepublicExecutive
HungaryRepublicCeremonial
IcelandRepublicCeremonial
IndiaRepublicCeremonial
IndonesiaRepublicExecutive
IranRepublicExecutive
IraqRepublicCeremonial
IrelandRepublicCeremonial
IsraelRepublicCeremonial
ItalyRepublicCeremonial
JamaicaConstitutional monarchyCeremonial
JapanConstitutional monarchyCeremonial
JordanConstitutional monarchyExecutive
KazakhstanRepublicExecutive
KenyaRepublicExecutive
KiribatiRepublicExecutive
KuwaitConstitutional monarchyExecutive
KyrgyzstanRepublicExecutive
LaosRepublicExecutive
LatviaRepublicCeremonial
LebanonRepublicCeremonial
LesothoConstitutional monarchyCeremonial
LiberiaRepublicExecutive
LibyaProvisionaln/a
LiechtensteinConstitutional monarchyExecutive
LithuaniaRepublicExecutive
LuxembourgConstitutional monarchyCeremonial
MadagascarRepublicExecutive
MalawiRepublicExecutive
MalaysiaConstitutional monarchyCeremonial
MaldivesRepublicExecutive
MaliProvisionaln/a
MaltaRepublicCeremonial
Marshall IslandsRepublicExecutive
MauritaniaRepublicExecutive
MauritiusRepublicCeremonial
MexicoRepublicExecutive
MicronesiaRepublicExecutive
MoldovaRepublicCeremonial
MonacoConstitutional monarchyExecutive
MongoliaRepublicExecutive
MontenegroRepublicCeremonial
MoroccoConstitutional monarchyExecutive
MozambiqueRepublicExecutive
MyanmarProvisionaln/a
NamibiaRepublicExecutive
NauruRepublicExecutive
NepalRepublicCeremonial
NetherlandsConstitutional monarchyCeremonial
New ZealandConstitutional monarchyCeremonial
NicaraguaRepublicExecutive
NigerRepublicExecutive
NigeriaRepublicExecutive
North KoreaRepublicExecutive
North MacedoniaRepublicCeremonial
NorwayConstitutional monarchyCeremonial
OmanAbsolute monarchyExecutive
PakistanRepublicCeremonial
PalauRepublicExecutive
PalestineRepublicExecutive
PanamaRepublicExecutive
Papua New GuineaConstitutional monarchyCeremonial
ParaguayRepublicExecutive
PeruRepublicExecutive
PhilippinesRepublicExecutive
PolandRepublicCeremonial
PortugalRepublicExecutive
QatarConstitutional monarchyExecutive
RomaniaRepublicExecutive
RussiaRepublicExecutive
RwandaRepublicExecutive
Saint Kitts and NevisConstitutional monarchyCeremonial
Saint LuciaConstitutional monarchyCeremonial
Saint Vincent and the GrenadinesConstitutional monarchyCeremonial
SamoaRepublicCeremonial
San MarinoRepublicExecutive
São Tomé and PríncipeRepublicExecutive
Saudi ArabiaAbsolute monarchyExecutive
SenegalRepublicExecutive
SerbiaRepublicCeremonial
SeychellesRepublicExecutive
Sierra LeoneRepublicExecutive
SingaporeRepublicCeremonial
SlovakiaRepublicCeremonial
SloveniaRepublicCeremonial
Solomon IslandsConstitutional monarchyCeremonial
SomaliaRepublicCeremonial
South AfricaRepublicExecutive
South KoreaRepublicExecutive
South SudanRepublicExecutive
SpainConstitutional monarchyCeremonial
Sri LankaRepublicExecutive
SudanProvisionaln/a
SurinameRepublicExecutive
SwedenConstitutional monarchyCeremonial
SwitzerlandRepublicExecutive
SyriaRepublicExecutive
TajikistanRepublicExecutive
TanzaniaRepublicExecutive
ThailandConstitutional monarchyCeremonial
TogoRepublicExecutive
TongaConstitutional monarchyExecutive
Trinidad and TobagoRepublicCeremonial
TunisiaRepublicExecutive
TurkeyRepublicExecutive
TurkmenistanRepublicExecutive
TuvaluConstitutional monarchyCeremonial
UgandaRepublicExecutive
UkraineRepublicExecutive
United Arab EmiratesConstitutional monarchyExecutive
United KingdomConstitutional monarchyCeremonial
United StatesRepublicExecutive
UruguayRepublicExecutive
UzbekistanRepublicExecutive
VanuatuRepublicCeremonial
Vatican CityAbsolute monarchyExecutive
VenezuelaRepublicExecutive
VietnamRepublicExecutive
YemenProvisionaln/a
ZambiaRepublicExecutive
ZimbabweRepublicExecutive

Let’s take a closer look at some of these systems.

Monarchies

Brought back into the spotlight after the death of Queen Elizabeth II of England in September 2022, this form of government has a single ruler. They carry titles from king and queen to sultan or emperor, and their government systems can be further divided into three modern types: constitutional, semi-constitutional, and absolute.

A constitutional monarchy sees the monarch act as head of state within the parameters of a constitution, giving them little to no real power. For example, King Charles III is the head of 15 Commonwealth nations including Canada and Australia. However, each has their own head of government.

On the other hand, a semi-constitutional monarchy lets the monarch or ruling royal family retain substantial political powers, as is the case in Jordan and Morocco. However, their monarchs still rule the country according to a democratic constitution and in concert with other institutions.

Finally, an absolute monarchy is most like the monarchies of old, where the ruler has full power over governance, with modern examples including Saudi Arabia and Vatican City.

Republics

Unlike monarchies, the people hold the power in a republic government system, directly electing representatives to form government. Again, there are multiple types of modern republic governments: presidential, semi-presidential, and parliamentary.

The presidential republic could be considered a direct progression from monarchies. This system has a strong and independent chief executive with extensive powers when it comes to domestic affairs and foreign policy. An example of this is the United States, where the President is both the head of state and the head of government.

In a semi-presidential republic, the president is the head of state and has some executive powers that are independent of the legislature. However, the prime minister (or chancellor or equivalent title) is the head of government, responsible to the legislature along with the cabinet. Russia is a classic example of this type of government.

The last type of republic system is parliamentary. In this system, the president is a figurehead, while the head of government holds real power and is validated by and accountable to the parliament. This type of system can be seen in Germany, Italy, and India and is akin to constitutional monarchies.

It’s also important to point out that some parliamentary republic systems operate slightly differently. For example in South Africa, the president is both the head of state and government, but is elected directly by the legislature. This leaves them (and their ministries) potentially subject to parliamentary confidence.

One-Party State

Many of the systems above involve multiple political parties vying to rule and govern their respective countries.

In a one-party state, also called a single-party state or single-party system, only one political party has the right to form government. All other political parties are either outlawed or only allowed limited participation in elections.

In this system, a country’s head of state and head of government can be executive or ceremonial but political power is constitutionally linked to a single political movement. China is the most well-known example of this government system, with the General Secretary of the Communist Party of China ruling as the de facto leader since 1989.

Provisional

The final form of government is a provisional government formed as an interim or transitional government.

In this system, an emergency governmental body is created to manage political transitions after the collapse of a government, or when a new state is formed. Often these evolve into fully constitutionalized systems, but sometimes they hold power for longer than expected.

Some examples of countries that are considered provisional include Libya, Burkina Faso, and Chad.

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