Frequencies for first 10,000 rows of pct012n151 variable in sf12000860us29 dataset :

   44 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,303       93.03       93.03
          1 |        494        4.94       97.97
          2 |        111        1.11       99.08
          3 |         37        0.37       99.45
          4 |         18        0.18       99.63
          5 |          9        0.09       99.72
          6 |          7        0.07       99.79
          7 |          5        0.05       99.84
          8 |          2        0.02       99.86
          9 |          2        0.02       99.88
         11 |          1        0.01       99.89
         12 |          2        0.02       99.91
         14 |          1        0.01       99.92
         17 |          2        0.02       99.94
         18 |          2        0.02       99.96
         20 |          1        0.01       99.97
         27 |          2        0.02       99.99
         37 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2017