Twin Birth Rates Among Different Ethnicity in the U.S.

	Twin birth rates per 1,000 births.... Non-Hispanic black	Non-Hispanic white	Hispanic
1980	24.5	18.3	16.8
1990	26.7	23.5	18
2000	33.4	32.3	20.2
2009	38	37	22.5

Sources: cdc.gov