NHIS Sources

Variable	Year	Supplement
INCGTLT20	1996	Imputed income
INCGTLT20	1995	Imputed income
INCGTLT20	1994	Imputed income
INCGTLT20	1993	Imputed income
INCGTLT20	1992	Imputed income
INCGTLT20	1991	Imputed income
INCGTLT20	1990	Imputed income