Frequencies for first 10,000 rows of pct012k060 variable in sf12010860us30 dataset :

   57 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,853       88.53       88.53
          1 |        894        8.94       97.47
          2 |        171        1.71       99.18
          3 |         45        0.45       99.63
          4 |         12        0.12       99.75
          5 |          6        0.06       99.81
          6 |          4        0.04       99.85
          7 |          1        0.01       99.86
          8 |          1        0.01       99.87
          9 |          1        0.01       99.88
         11 |          1        0.01       99.89
         12 |          1        0.01       99.90
         13 |          1        0.01       99.91
         14 |          1        0.01       99.92
         16 |          1        0.01       99.93
         19 |          1        0.01       99.94
         24 |          1        0.01       99.95
         40 |          2        0.02       99.97
         54 |          2        0.02       99.99
         65 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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