This variable gives the year block when a respondent immigrated in the United States and is in-scope when foreign_born=1. The year of arrival to the U.S. is from the migration history wave 2 topical module (TM8736 for 1984, 1990-1993; emoveus for 1996, 2001, 2004, and 2008). Year blocks are generally five years but are as wide as 9 years and as short as 2 years. Categories are: 1=1959 or earlier; 2=1960-1964; 3=1965-1969; 4=1970-1974; 5=1974-1979; 6=1980-1981; 7=1982-1984; 8=1985-1993; 9=1994-1999; 10=2000-2004; 11=2005-2009; 12=2010-2014.