Year % of immigrants
1980 57.2
1990 53.0
2000 49.0
2010 48.4
2013 50.4
2014 50.4

Note: English proficiency are those who speak only English at home or if they speak a non-English language at home, they indicate they can speak English at least “very well.”

Source: Pew Research Center tabulations of 1980-2000 decennial censuses and 2010, 2013 and 2014 American Community Surveys (IPUMS)