Frequencies for first 10,000 rows of pct012n062 variable in sf12010880us33 dataset :

   59 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,554       95.54       95.54
          1 |        339        3.39       98.93
          2 |         58        0.58       99.51
          3 |         17        0.17       99.68
          4 |          8        0.08       99.76
          5 |         12        0.12       99.88
          6 |          3        0.03       99.91
          7 |          1        0.01       99.92
          8 |          2        0.02       99.94
          9 |          1        0.01       99.95
         12 |          2        0.02       99.97
         14 |          1        0.01       99.98
         18 |          1        0.01       99.99
         21 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 May 2017