Births have declined for three consecutive years, and are now 7% below the peak in 2007. This drop has continued through 2010, according to data released by the U.S. National Center for Health Statistics in June 2011. Numerous experts have suggested that this decline is largely a reflection of unfavorable economic conditions. This connection between birth rates and economic downturns partly stems from the fact that American birth rates have now fallen to levels that are comparable to the Great Depression of the 1930s. Teen birth rates in the U.S. are at the lowest level in U.S. history. In fact, teen birth rates in the U.S. have consistently decreased since 1991 through 2011, except for a brief increase between 2005 and 2007. The other aberration from this otherwise steady decline in teen birth rates is the 6% decrease in birth rates for 15- to 19-year-olds between 2008 and 2009. Despite these years of decrease, U.S. teen birth rates are still higher than in other developed nations. Racial differences prevail with teen birth and pregnancy rates as well. The American Indian/Alaska Native, Hispanic, and non-Hispanic Black teen pregnancy rates are more than double the non-Hispanic white teen birth rate.