Table 2.

Response rate each wave by sample type and interview type: 1968 to present

		Core					Latino (1990–95)/ Immigrant (1997-present)
Year	Total	Re-interview	Recontact	Split-off	Recontact split-off	Total	Re-interview	Recontact	Split-off	Recontact split-off	Total
1968	76.0
1969	81.4	89.0		60.4		81.4
1970	95.7	97.0		84.0		95.7
1971	96.5	97.0		86.0		96.5
1972	97.8	98.5		88.0		97.8
1973	97.8	98.5		88.9		97.8
1974	97.6	98.0		92.5		97.6
1975	97.8	98.4		88.6		97.8
1976	97.0	98.0		87.0		97.0
1977	97.6	98.0		90.3		97.6
1978	98.0	98.3		90.0		98.0
1979	97.5	98.2		86.5		97.5
1980	97.6	98.0		90.0		97.6
1981	97.7	98.3		85.7		97.7
1982	98.0	98.8		86.0		98.0
1983	98.0	98.3		88.3		98.0
1984	97.7	98.0		92.4		97.7
1985	97.3	97.7		92.0		97.3
1986	97.1	97.4		89.5		97.1
1987	97.2	97.8		82.9		97.2
1988	97.6	98.0		87.2		97.6
1989	97.4	97.9		83.3		97.4
1990	91.7	98.3		89.2		98.0					74.8
1991	96.1	98.2		86.1		97.8	92.3		64.7		90.2
1992	96.0	98.0		85.7		97.6	92.6		66.7		90.4
1993	92.2	95.5	52.1	67.9	47.4	94.7	87.7	na	54.5	na	84.5
1994	na	95.9	na	na	na	na	na	na	na	na	na
1995	na	97.0	na	na	na	na	na	na	na	na	na
1996	na	97.6	na	na	na	na
1997	na	95.7	na	na	na	na					na
1999	90.7	96.0	54.6	82.3	50.0	93.1	82.8	32.9	65.5	0.0	66.4
2001	91.7	96.7	52.0	79.7	0.0	93.0	88.5	31.1	61.4	0.0	76.4
2003	92.7	96.6	57.6	79.6	42.9	93.4	93.9	48.9	58.1	0.0	83.9
2005	93.9	97.4	58.2	81.4	42.9	94.6	93.1	38.5	67.7	0.0	85.4
2007	93.2	96.4	46.3	85.5	71.4	93.9	92.3	31.7	73.7	66.7	85.1
2009	94.3	97.0	53.5	88.7	53.8	94.7	95.5	44.4	84.6	0.0	89.8

Notes: na= not available.