An Insight

There are more twins now than ever before. From 1915 until 1980 the rate was ~2%.

By 1995 it was 2.5%, more than 3% in 2001 and hit 3.3% in 2010.

Older women tend to have more twins, and women tend to start families later.

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— Massimo (@Rainmaker1973) February 11, 2023