Frequencies for first 10,000 rows of pct012k035 variable in sf12010860us30 dataset :

   32 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,958       89.58       89.58
          1 |        753        7.53       97.11
          2 |        189        1.89       99.00
          3 |         59        0.59       99.59
          4 |         11        0.11       99.70
          5 |          8        0.08       99.78
          6 |          2        0.02       99.80
          7 |          6        0.06       99.86
          8 |          2        0.02       99.88
         12 |          1        0.01       99.89
         13 |          1        0.01       99.90
         21 |          2        0.02       99.92
         24 |          1        0.01       99.93
         26 |          1        0.01       99.94
         34 |          1        0.01       99.95
         37 |          1        0.01       99.96
         38 |          1        0.01       99.97
         57 |          1        0.01       99.98
         69 |          1        0.01       99.99
         78 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 Apr 2017