Demographics

Charted: The Global Decline of Fertility Rates

Published

1 year ago

June 10, 2022

Pablo Alvarez

Featured Creator

Article/Editing:

Carmen Ang

Chart showing the change in global fertility rates since 1951

Charted: The Global Decline of Fertility Rates

Over the last 50 years, fertility rates have dropped drastically around the world. In 1952, the average global family had five children—now, they have less than three.

This graphic by Pablo Alvarez uses tracked fertility rates from Our World in Data to show how rates have evolved (and largely fallen) over the past decades.

What’s The Difference Between Fertility Rates and Birth Rates?

Though both measures relate to population growth, a country’s birth rate and fertility rate are noticeably different:

Birth Rate: The total number of births in a year per 1,000 individuals.
Fertility Rate: The total number of births in a year per 1,000 women of reproductive age in a population.

As such, the fertility rate is a more specific measure, which as Britannica highlights, “allows for more efficient and beneficial planning and resource allocation.” Not including immigration, a given area needs an overall total fertility rate of 2.1 to keep a stable population.

Global Fertility Rates since 1952

For the last half-century, fertility rates have steadily decreased worldwide. Here’s a look at the average number of children per woman since 1952:

Year	Average # of children per family	% change (y-o-y)
1951	5.0	-0.5%
1952	5.0	-1.4%
1953	4.9	-0.7%
1954	4.9	-0.5%
1955	4.9	-0.3%
1956	4.9	-0.1%
1957	4.9	0.1%
1958	4.9	0.3%
1959	4.9	0.4%
1960	5.0	0.5%
1961	5.0	0.5%
1962	5.0	0.4%
1963	5.0	0.3%
1964	5.0	0.1%
1965	5.0	-0.2%
1966	5.0	-0.5%
1967	5.0	-0.8%
1968	4.9	-1.1%
1969	4.8	-1.4%
1970	4.7	-1.8%
1971	4.6	-2.1%
1972	4.5	-2.5%
1973	4.4	-2.7%
1974	4.3	-2.9%
1975	4.2	-2.9%
1976	4.0	-2.8%
1977	3.9	-2.7%
1978	3.8	-2.4%
1979	3.8	-2.1%
1980	3.7	-1.7%
1981	3.6	-1.3%
1982	3.6	-1.0%
1983	3.6	-0.8%
1984	3.6	-0.7%
1985	3.5	-0.8%
1986	3.5	-1.0%
1987	3.4	-1.4%
1988	3.4	-1.7%
1989	3.3	-2.1%
1990	3.2	-2.4%
1991	3.1	-2.6%
1992	3.1	-2.6%
1993	3.0	-2.4%
1994	2.9	-2.2%
1995	2.9	-1.8%
1996	2.8	-1.5%
1997	2.8	-1.3%
1998	2.8	-1.1%
1999	2.7	-1.1%
2000	2.7	-0.9%
2001	2.7	-0.9%
2002	2.7	-0.7%
2003	2.6	-0.6%
2004	2.6	-0.6%
2005	2.6	-0.5%
2006	2.6	-0.5%
2007	2.6	-0.5%
2008	2.6	-0.5%
2009	2.6	-0.5%
2010	2.5	-0.5%
2011	2.5	-0.5%
2012	2.5	-0.5%
2013	2.5	-0.5%
2014	2.5	-0.4%
2015	2.5	-0.4%
2016	2.5	-0.4%
2017	2.5	-0.4%
2018	2.5	-0.4%
2019	2.5	-0.4%
2020	2.4	-0.4%

Why are women having fewer children? There are a number of theories and empirical research studies to help explain this decrease, but according to Dr. Max Roser, the founder of Our World in Data, most of the literature boils down to three main factors:

Women’s empowerment, particularly in education and the workforce
Lower child mortality
Increased cost to raising children

Research has found that higher education in women is correlated with lower fertility. For instance, in Iran in the 1950s, women had an average of three years of schooling and raised seven children on average.

But by 2010, when Iranian women had nine years of schooling on average, the average fertility rate in the country had dropped to 1.8.

This theory is further supported when you look at countries where women’s education is still relatively lagging. For instance, in 2010, women in Niger had 1.3 years of education on average, and an average of more than seven children—more than double the global average at that time.

The Societal Impact

Lower fertility rates, coupled with increased life expectancies around the world, are creating an aging population. Since 1950, the global median age has grown from 25 years to 33 years.

An older population comes with a number of economic risks, including rising healthcare costs and a smaller global workforce.

share of population that's working age is shrinking

According to a report by the World Bank, the world’s working-age population peaked back in 2012. Since then, it’s been on the decline.

A smaller working population puts more pressure on those who are working to support those who are collecting pensions. This could ultimately lead to an economic slowdown if countries don’t prepare and alter their pension systems accordingly, to account for our aging population.

This article was published as a part of Visual Capitalist's Creator Program, which features data-driven visuals from some of our favorite Creators around the world.

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Healthcare

Charted: Average Years Left to Live by Age

Visualizing the number of years left to live for Americans at every age, reveals the broader trends in American life expectancy.

Published

6 days ago

November 29, 2023

Pallavi Rao

Chart showing the average years left to live at every age for men and women.

How Many Years Do You Have Left to Live?

At the start of the 19th century, when there fewer than 1 billion humans on the earth, global life expectancy at birth stood at roughly 29 years.

This is a startlingly low figure—because life expectancy is a statistical projection of how many more years a person can expect to live, based on the mortality rates at the time. And since the infant mortality rate in particular was so high, life expectancies accurately summarized the low likelihood of many babies living to adulthood.

However, since the 1920s, life expectancy across all ages has improved leaps and bounds, thanks to rapid advancements in nutrition, healthcare, and sanitation.

We visualized the current American life expectancy by age and gender, using data from the Office of Social Security, which bases their current projections on 2020 mortality rates.

American Life Expectancy at Every Age

A key takeaway with life expectancy is that it increases as one gets older. This is easily seen in the table below, which lists the remaining years left to live at a given age for an American male and the projected life expectancy.

Age	Years Remaining (Men)	Life Expectancy (Men)
0	74.12	74.12
1	73.55	74.55
2	72.58	74.58
3	71.60	74.60
4	70.62	74.62
5	69.63	74.63
6	68.64	74.64
7	67.65	74.65
8	66.65	74.65
9	65.66	74.66
10	64.67	74.67
11	63.68	74.68
12	62.69	74.69
13	61.70	74.70
14	60.71	74.71
15	59.73	74.73
16	58.76	74.76
17	57.79	74.79
18	56.84	74.84
19	55.90	74.90
20	54.97	74.97
21	54.04	75.04
22	53.12	75.12
23	52.21	75.21
24	51.30	75.30
25	50.39	75.39
26	49.48	75.48
27	48.57	75.57
28	47.66	75.66
29	46.76	75.76
30	45.86	75.86
31	44.97	75.97
32	44.07	76.07
33	43.18	76.18
34	42.29	76.29
35	41.39	76.39
36	40.50	76.50
37	39.62	76.62
38	38.73	76.73
39	37.85	76.85
40	36.97	76.97
41	36.09	77.09
42	35.21	77.21
43	34.34	77.34
44	33.46	77.46
45	32.59	77.59
46	31.73	77.73
47	30.87	77.87
48	30.01	78.01
49	29.17	78.17
50	28.33	78.33
51	27.50	78.50
52	26.67	78.67
53	25.86	78.86
54	25.06	79.06
55	24.27	79.27
56	23.48	79.48
57	22.71	79.71
58	21.95	79.95
59	21.21	80.21
60	20.47	80.47
61	19.74	80.74
62	19.03	81.03
63	18.32	81.32
64	17.63	81.63
65	16.94	81.94
66	16.26	82.26
67	15.58	82.58
68	14.91	82.91
69	14.24	83.24
70	13.59	83.59
71	12.94	83.94
72	12.30	84.30
73	11.67	84.67
74	11.05	85.05
75	10.46	85.46
76	9.88	85.88
77	9.32	86.32
78	8.77	86.77
79	8.25	87.25
80	7.74	87.74
81	7.25	88.25
82	6.77	88.77
83	6.31	89.31
84	5.88	89.88
85	5.47	90.47
86	5.07	91.07
87	4.70	91.70
88	4.35	92.35
89	4.02	93.02
90	3.72	93.72
91	3.44	94.44
92	3.18	95.18
93	2.96	95.96
94	2.75	96.75
95	2.57	97.57
96	2.42	98.42
97	2.28	99.28
98	2.15	100.15
99	2.04	101.04
100	1.93	101.93
101	1.83	102.83
102	1.73	103.73
103	1.63	104.63
104	1.54	105.54
105	1.45	106.45
106	1.36	107.36
107	1.27	108.27
108	1.18	109.18
109	1.10	110.10
110	1.02	111.02
111	0.95	111.95
112	0.88	112.88
113	0.82	113.82
114	0.76	114.76
115	0.70	115.70
116	0.65	116.65
117	0.60	117.60
118	0.56	118.56
119	0.52	119.52
120	0.48	120.48

At birth, an average American baby boy can expect to live till just past 74. But if the boy reaches adulthood, then at 21 he might live to a full year more, past 75. This trend persists even towards the end of life when the years we have left drop rapidly, influenced by the higher likelihood of death.

American women, on the other hand, have a higher life expectancy than men. At birth the gap is close to six years, narrowing steadily to around one year by 85.

Age	Years Remaining (Women)	Life Expectancy (Women)
0	79.78	79.78
1	79.17	80.17
2	78.19	80.19
3	77.21	80.21
4	76.22	80.22
5	75.23	80.23
6	74.24	80.24
7	73.25	80.25
8	72.25	80.25
9	71.26	80.26
10	70.27	80.27
11	69.27	80.27
12	68.28	80.28
13	67.29	80.29
14	66.30	80.30
15	65.31	80.31
16	64.32	80.32
17	63.34	80.34
18	62.36	80.36
19	61.38	80.38
20	60.41	80.41
21	59.44	80.44
22	58.47	80.47
23	57.50	80.50
24	56.54	80.54
25	55.58	80.58
26	54.61	80.61
27	53.66	80.66
28	52.70	80.70
29	51.74	80.74
30	50.79	80.79
31	49.84	80.84
32	48.89	80.89
33	47.94	80.94
34	47.00	81.00
35	46.06	81.06
36	45.12	81.12
37	44.18	81.18
38	43.24	81.24
39	42.31	81.31
40	41.38	81.38
41	40.45	81.45
42	39.52	81.52
43	38.60	81.60
44	37.68	81.68
45	36.76	81.76
46	35.85	81.85
47	34.94	81.94
48	34.04	82.04
49	33.14	82.14
50	32.24	82.24
51	31.35	82.35
52	30.47	82.47
53	29.59	82.59
54	28.72	82.72
55	27.86	82.86
56	27.01	83.01
57	26.16	83.16
58	25.32	83.32
59	24.49	83.49
60	23.67	83.67
61	22.85	83.85
62	22.04	84.04
63	21.24	84.24
64	20.45	84.45
65	19.66	84.66
66	18.88	84.88
67	18.10	85.10
68	17.34	85.34
69	16.58	85.58
70	15.82	85.82
71	15.08	86.08
72	14.36	86.36
73	13.64	86.64
74	12.94	86.94
75	12.26	87.26
76	11.60	87.60
77	10.95	87.95
78	10.31	88.31
79	9.70	88.70
80	9.10	89.10
81	8.53	89.53
82	7.98	89.98
83	7.44	90.44
84	6.93	90.93
85	6.44	91.44
86	5.99	91.99
87	5.55	92.55
88	5.15	93.15
89	4.76	93.76
90	4.41	94.41
91	4.08	95.08
92	3.78	95.78
93	3.51	96.51
94	3.27	97.27
95	3.05	98.05
96	2.85	98.85
97	2.68	99.68
98	2.52	100.52
99	2.37	101.37
100	2.23	102.23
101	2.09	103.09
102	1.96	103.96
103	1.84	104.84
104	1.72	105.72
105	1.61	106.61
106	1.51	107.51
107	1.41	108.41
108	1.32	109.32
109	1.24	110.24
110	1.16	111.16
111	1.09	112.09
112	1.02	113.02
113	0.96	113.96
114	0.90	114.90
115	0.85	115.85
116	0.80	116.80
117	0.75	117.75
118	0.70	118.70
119	0.66	119.66
120	0.62	120.62

Interestingly, women outlive men in nearly every country in the world, due to a mix of sociological, behavioral, and biological reasons.

COVID-19: Reversing A Decade of Increasing American Life Expectancy

While the current American life expectancy at birth seems reasonably high, it is nearly two years lower than the 2022 figure which used the 2019 mortality rate. It is also lower than the life expectancy at birth in 2009, which used 2005 mortality rate.

Year	Life Expectancy at Birth (Men)	Life Expectancy at Birth (Women)
2009	74.12	79.95
2014	76.10	80.94
2019	76.04	80.99
2023	74.12	79.78

American mortality rates went up 17% between 2019–2020, in part because of COVID-19, in turn affecting life expectancy. The U.S. also had a higher COVID-19 mortality rate compared to its peers two years after the pandemic first struck.

Thus, American life expectancy may not improve immediately to 2019 levels, which can affect insurance premiums, pension benefits, and plans.

Where Does This Data Come From?

Source: Office of Social Security, U.S. Government.

Note: The life expectancy at a given age is the average remaining number of years expected prior to death for a person at that exact age, born on January 1, using the mortality rates for 2020 over the course of their remaining life.