NHIS Sources

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