Advertisement
U.S. Markets closed
  • S&P 500

    5,254.35
    +5.86 (+0.11%)
     
  • Dow 30

    39,807.37
    +47.29 (+0.12%)
     
  • Nasdaq

    16,379.46
    -20.06 (-0.12%)
     
  • Russell 2000

    2,124.55
    +10.20 (+0.48%)
     
  • Crude Oil

    83.11
    -0.06 (-0.07%)
     
  • Gold

    2,254.80
    +16.40 (+0.73%)
     
  • Silver

    25.10
    +0.18 (+0.74%)
     
  • EUR/USD

    1.0797
    +0.0003 (+0.0324%)
     
  • 10-Yr Bond

    4.2060
    +0.0100 (+0.24%)
     
  • Vix

    13.01
    0.00 (0.00%)
     
  • GBP/USD

    1.2625
    +0.0002 (+0.0189%)
     
  • USD/JPY

    151.3030
    -0.0690 (-0.0456%)
     
  • BTC-USD

    70,098.91
    -734.14 (-1.04%)
     
  • CMC Crypto 200

    885.54
    0.00 (0.00%)
     
  • FTSE 100

    7,952.62
    +20.64 (+0.26%)
     
  • Nikkei 225

    40,369.44
    +201.37 (+0.50%)
     

Look How US Birth Rates Soared And Then Plunged In The Past Century

Birth rates have varied over time, but especially prominent is the "baby boom" after WWII.

This boom is especially visible in new data collected by researchers at the University of Michigan. They digitized 78 years of monthly birth records from every U.S. state.

From the data they created this chart of the average birth rates in different states, in three different eras: Pre-baby boom era (1931-1945), the baby-boom era (1945-1954) and the modern era (1965- 2008).

You can see how drastically the birth rates changed. The redder the state, the higher the birth rate (2.14 babies per couple and above, up to 3.16). The darker the blue the lower the birth rate, from 2.14 down to 1.12 babies per couple.

birth rates by era
birth rates by era

Proc. Royal. Soc. B: Bio Sci

The chart is from a new study in the journal Proceedings of the Royal Society B: Biological Sciences. The researchers say it's "the most extensive spatiotemporal data set on human births to date."

They actually used the data to analyze when birth rates peak in different places, and used the data with a model of measles infection to see the best time of the year to vaccinate.

This information can be used to time vaccination to reduce the burden of disease in developing nations.



More From Business Insider

Advertisement