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Animation: 200 Years of U.S. Immigration As Tree Rings

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If you walk down the streets in the United States, the odds are that one in every four people you’ll see is an immigrant, or was born to immigrant parents.

While those odds might seem high, the truth is nearly everyone in the U.S. hails from someplace else if you look far back enough.

Visualizing U.S. Immigration

Today’s intriguing visualization was created by professors Pedro M. Cruz and John Wihbey from Northeastern University, and it depicts U.S. immigration from 1830 until 2015, as rings in a growing tree trunk.

The researchers turned registered U.S. Census data into an estimate for the total number of immigrants arriving each decade, and then the yearly figures in the visualization. One caveat is that it does not account for the populations of slaves, or indigenous communities.

From the Old to the New World

The pattern of U.S. immigration can be explained in four major waves overall:

U.S. Immigration Waves

The origins of U.S. immigrant populations transform from era to era. Which events influenced each wave?

Frontier Expansion: 1830-1880

  • Cheap farmland and the promise of economic growth in the first Industrial Revolution spurred large-scale immigration from Britain, Germany, and other parts of Central Europe.
  • The Irish Potato Famine from 1845 to 1849 drove many immigrants from Ireland over to the U.S.
  • The 1848 Treaty of Guadalupe ended the Mexican-American war, and extended U.S. citizenship to over 70,000 Mexican residents.

Industrialization: 1880-1915

  • Immigrant mobility increased with the introduction of large steam-powered ships. The expansion of railroads in Europe also made it easier for people to reach oceanic ports.
  • On the other hand, the Chinese Exclusion act in 1882 prohibited Chinese laborers from entry.
  • In 1892, the famous Ellis Island opened; the first federal immigration station provided a gateway for over 12 million people.

The Great Pause: 1915-1965

  • The Immigration Act of 1924 enacted quotas on immigrant numbers, restricting groups from countries in Southern and Eastern Europe, and virtually all immigrants of Asian origin.
  • The Great Depression, and subsequent World Wars also complicated immigration matters as many came to seek refuge in the United States.

Post-1965 Immigration: 1965-Present

  • The Hart-Cellber (Immigration and Naturalization Act) of 1965 overturned all previous quotas based on national origin. Family unification and an increase in skilled labor were two major aims of this act.
  • This decision significantly impacted the U.S. demographic makeup in the following decades, as more immigrants of Latin, Asian, and African descent entered the country.

E Pluribus Unum (From Many, One)

While others have mapped two centuries of immigration before, few have captured its sheer scale and impact quite as strikingly. The researchers explain their reasoning behind this metaphor of tree rings:

This idea lends itself to the representation of history itself, as it shows a sequence of events that have left a mark and shaped the present. If cells leave a mark in the tree, so can incoming immigrants be seen as natural contributors to the growth of a trunk that is the United States.

It’s no wonder that this animation showing U.S. immigration won Gold for the “People, Language, and Identity” and “Most Beautiful” categories at the 2018 Kantar Information is Beautiful Awards.

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Data Visualization

Visualizing the Decline of Confidence in American Institutions

Americans rely on several institutions for their services and safety—but how has their confidence in institutions changed since 1975?

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Every day, the public relies on a number of major institutions for services and safety. From banks and governments, to media and the military—these institutions play an important role in shaping life as we know it.

Yet, today’s interactive data visualization from Overflow Data shows that America’s confidence in institutions has drastically waned. The data relies on the General Social Survey (GSS) to provide a 40-year overview of how sentiment has changed with respect to 13 different institutions.

Select an institution from the drop-down menu below to see how confidence has changed over time

The Erosion of Confidence

Overall, confidence in most institutions has eroded. Americans find it especially hard to trust their government: the “great deal of confidence” metrics for Congress, the Supreme Court, and the Executive Branch were low to begin with, and have declined further since 1975.

That said, the biggest overall drop belongs to the press, which saw 50% of surveyed Americans saying they have “hardly any confidence” in it in 2016. This is nearly a three-fold increase from 1975, when that number was just 19%. Of course, with the rise of fake news in more recent years, the erosion of confidence in media doesn’t seem to be slowing down.

Here’s a look at the two extremes of sentiment regarding the studied institutions, showing how the opposite measures of “hardly any confidence” and a “great deal of confidence” have changed since 1975:

InstitutionConfidence level19752016Change
🏦 Banks & Financial Institutions Hardly any10.9%31.2%+20.3 p.p.
Great deal32.3%14.1%-18.2 p.p.
🗳️ CongressHardly any26.2%52.6%+26.4 p.p.
Great deal13.6%5.9%-7.7 p.p.
🏫 EducationHardly any13.0%17.5%+4.5 p.p.
Great deal31.5%25.6%-5.9 p.p.
🏛️ Executive BranchHardly any29.7%42.4%+12.7 p.p.
Great deal13.4%12.8%-0.6 p.p.
🏬 Major CompaniesHardly any22.9%17.3%-5.6 p.p.
Great deal20.5%18.3%-2.2 p.p.
🏥 MedicineHardly any17.8%13.4%-4.4 p.p.
Great deal51.8%50.6%-1.2 p.p.
🎖️ MilitaryHardly any14.8%7.6%-7.2 p.p.
Great deal36.3%53.4%+17.1 p.p.
💪 Organized LaborHardly any31.5%22.6%-8.9 p.p.
Great deal10.2%13.9%+3.7 p.p.
🙏 ReligionHardly any23.0%26.4%+3.4 p.p.
Great deal25.8%20.0%-5.8 p.p.
📰 PressHardly any19.0%50.0%+31 p.p.
Great deal24.5%7.6%-16.9 p.p.
🥼 Scientific CommunityHardly any7.4%6.1%-1.3 p.p.
Great deal41.7%42.1%+0.4 p.p.
📺 TelevisionHardly any23.4%43.1%+19.7 p.p.
Great deal18.4%9.8%-8.6 p.p.
⚖️ U.S. Supreme CourtHardly any19.2%17.4%-1.8 p.p.
Great deal31.8%26.3%-5.5 p.p.

Banks and financial institutions have also suffered a bad rep in the public eye. Their “great deal of confidence” metric has dropped sharply from 32.3% to 14.1% in four decades.

One major exception is the military, which emerges as the most trusted institution. Americans’ faith in the military has also shown the most improvement, with a 17.1 p.p increase in a “great deal of confidence” since 1975.

The Split Widens Further

While measuring public confidence in institutions can be subjective, it provides an understanding of where Americans want to see change and reform take place.

For more on how Americans perceive different institutions and the issues that affect them, see how the public is divided based on political affiliation.

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Data Visualization

All the S&P 500 Women CEOs in One Timeline (2000-2019)

Since the turn of the century, only a meager 5.6% of S&P 500-indexed companies have been led by women. Today’s interactive timeline highlights their tenures.

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female ceos s&p 500

All the S&P 500 Women CEOs in One Timeline (2000-2019)

Gender equality has made significant strides since the days of Rosie the Riveter. The iconic wartime image continues to symbolize womens’ empowerment in the present—especially in politics and the workforce.

Yet, the higher and further women get in their careers, it’s clear that barriers still remain. Today’s interactive timeline comes to us from Alex Architektonidis of BoardEx, and it tracks all the women chief executive officers (CEOs) of companies listed in the S&P 500 index since the turn of the century.

The kicker? Across the 500 large-cap companies in the index, only 70 women have ever held the position of CEO or similar titles—and only 28 women currently have this status.

Which Industries Have the Most Women CEOs?

The S&P 500 covers approximately 80% of the U.S. equity market by capitalization. Since the index is fluid and regularly updated, women CEOs were selected based on whether their company was listed in the index during their tenure.

Out of all the sectors represented on the timeline, the top categories are retail with 14 women CEOs, engineering and tech with 10 women CEOs, and finance with 9 women CEOs. Food & beverage and utilities are tied with 7 women CEOs each.

Women Leading in the Corporate World

Topping the list is Marion Osher Sandler, the first and longest-serving woman CEO in the United States. She held the title for nearly 27 years at Golden West Financial Corp (from 1980 to 2006), a company she co-founded and grew to $125 billion in assets.

The next person in line for the longest female-led CEO term is Debra A Cafaro, from the healthcare-focused real estate investment trust Ventas Inc. Cafaro has been CEO of Ventas for 20 years, and generated a cumulative total return of 2,559% since 1999—the S&P average for returns over the same time period was only 215%.

Only two women CEOs show up more than twice on the timeline. The first is Meg Cushing Whitman, who served as President/CEO of Ebay from 1998–2008, Chairman/President/CEO of HP Inc. from 2011–2015, and finally as the CEO of Hewlett Packard from 2015 to 2018. In total, Whitman has spent over 16 years as CEO of these S&P 500 companies.

However, Carol Ann Bartz also has an impressive CV, with nearly 17 years as a CEO under her belt. Bartz was the Chairman/President/CEO of the software corporation Autodesk from 1992–2006, and later on at Yahoo from 2009 to 2011.

The most recent addition to this list is Julie Spellman Sweet, who became the CEO of Accenture on September 1st. She was previously the CEO of Accenture’s North American division, and has been crowned on Fortune’s “Most Powerful Women” list from 2016–2018 consecutively. Sweet’s appointment aligns well with Accenture’s corporate diversity targets—the company is aiming for 25% women in managing director roles globally by 2020.

There’s More Work To Be Done

There’s a growing body of evidence that corporate diversity improves a company’s financial bottom line. A recent CNBC analysis shows that in 2019, over half of female CEOs led their company’s stocks to outperform the S&P 500 index, with some even showing quadruple-digit percentage returns (as previously mentioned with Ventas).

Despite womens’ contributions to nearly half the labor force and consistent success as CEOs, they are disproportionately represented higher up the ladder. Women CEOs still lead a meager 5.6% of S&P 500 companies overall—in fact, women CEO appointments are actually slowing down, averaging less than 6% since 2015.

Such stunted growth is setting back equality at the C-suite level drastically. A joint report between the non-profit Lean In and the consulting firm McKinsey & Co. offers some insight into the reasons underlying this disparity:

Since 2015… corporate America has made almost no progress in improving women’s representation. From the outset, fewer women than men are hired at the entry level. And at every subsequent step, the representation of women further declines.

Women in the Workplace 2018

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