Derivation
INCSELF is a 6-digit numeric variable.
999998 = Unknown/missing.
999999 = NIU (not in universe).
Canada 1971: 50,000+ females in Atlantic region; 75,000+ for others
Canada 1981: 75,000+ all females, males in Atlantic region; 100,000+ males other regions
Canada 1991-2001: 200,000+
Israel 1995: 40,000+
Panama 2000: 9,997+
Panama 2010: 5,000+
Puerto Rico 1980: 50,000
Puerto Rico 1990: 64,146
Puerto Rico 2000: 367,000 (median of values over 126,000)
Puerto Rico 2005: 189,472 (median value above 99.5th percentile)
Puerto Rico 2010: 154,000 (median value above 99.5th percentile)
U.S.A. 1970: 50,000
U.S.A. 1980: 75,000
U.S.A. 1990: 171,250
U.S.A. 2000: 126,000 (State median of values over 126,000)
U.S.A. 2005: State median of values over 75,000
U.S.A 2010: 439,000
Canada 1981-2001: -50,000
Puerto Rico 1970: 0.
Puerto Rico 1980: -9,995
Puerto Rico 1990: -4,999
Puerto Rico 2000: -10,000
Puerto Rico 2005: -10,186
Puerto Rico 2010: -9,999
U.S.A. 1970: -9,900
U.S.A. 1980: -9,995
U.S.A. 1990: -9,999
U.S.A. 2000: -10,000
U.S.A. 2005: -9,999
U.S.A. 2010: -9,900
