Frequencies for first 10,000 rows of tssily variable in sippp08putm1 dataset : REC: Last year | received | SSI(years) | Freq. Percent Cum. ----------------+----------------------------------- Not in Universe | 9,875 98.75 98.75 1980 | 2 0.02 98.77 1982 | 2 0.02 98.79 1983 | 1 0.01 98.80 1984 | 2 0.02 98.82 1985 | 3 0.03 98.85 1987 | 1 0.01 98.86 1988 | 2 0.02 98.88 1989 | 1 0.01 98.89 1990 | 1 0.01 98.90 1991 | 1 0.01 98.91 1992 | 3 0.03 98.94 1993 | 1 0.01 98.95 1994 | 2 0.02 98.97 1995 | 2 0.02 98.99 1996 | 1 0.01 99.00 1997 | 6 0.06 99.06 1998 | 6 0.06 99.12 1999 | 2 0.02 99.14 2000 | 2 0.02 99.16 2001 | 9 0.09 99.25 2002 | 4 0.04 99.29 2003 | 4 0.04 99.33 2004 | 9 0.09 99.42 2005 | 6 0.06 99.48 2006 | 5 0.05 99.53 2007 | 4 0.04 99.57 2008 | 43 0.43 100.00 ----------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 3 Jan 2016