Frequencies for first 10,000 rows of pct012a100 variable in sf12010860us20 dataset :

   97 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,866       78.66       78.66
          1 |      1,211       12.11       90.77
          2 |        464        4.64       95.41
          3 |        213        2.13       97.54
          4 |        122        1.22       98.76
          5 |         62        0.62       99.38
          6 |         29        0.29       99.67
          7 |         13        0.13       99.80
          8 |          7        0.07       99.87
          9 |          5        0.05       99.92
         10 |          2        0.02       99.94
         11 |          1        0.01       99.95
         12 |          1        0.01       99.96
         13 |          2        0.02       99.98
         14 |          1        0.01       99.99
         15 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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