Frequencies for first 10,000 rows of peinusyr variable in morg03 dataset :

      (dp) Year of entry to US |      Freq.     Percent        Cum.
-------------------------------+-----------------------------------
              Not Foreign Born |      8,318       83.18       83.18
                   Before 1950 |         41        0.41       83.59
                     1950-1959 |         70        0.70       84.29
                     1960-1964 |         68        0.68       84.97
                     1965-1969 |        100        1.00       85.97
                     1970-1974 |        104        1.04       87.01
                     1975-1979 |        159        1.59       88.60
                     1980-1981 |         90        0.90       89.50
                     1982-1983 |         65        0.65       90.15
                     1984-1985 |         91        0.91       91.06
                     1986-1987 |         80        0.80       91.86
                     1988-1989 |        118        1.18       93.04
                     1990-1991 |        146        1.46       94.50
                     1992-1995 |         77        0.77       95.27
                     1994-1995 |        113        1.13       96.40
                     1996-1997 |        108        1.08       97.48
                     1998-1999 |        110        1.10       98.58
                     2000-2003 |        142        1.42      100.00
-------------------------------+-----------------------------------
                         Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 15 Mar 2017