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 1996-2008). 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

1	Before 1959
2	1960-1964
3	1965-1969
4	1970-1974
5	1975-1979
6	1980-1981
7	1982-1984
8	1985-1993
9	1994-1999
10	2000-2004
11	2005-2009
12	2010-2014
sysmiss	Structurally missing, out of scope for question (foreign_born=0)