Update the given paragraph to be clearer:
In 2007, Hispanics accounted for 45 % of all newborns whereas non-Hispanic whites accounted for 41 % of all births. By 2011 those trends reversed.
In 2007, Hispanics accounted for 45 % of all newborns whereas non-Hispanic whites accounted for 41 % of all births. However by 2011 those trends reversed.