Frequencies for first 10,000 rows of pct012a206 variable in sf12010860us20 dataset :

   99 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,974       69.74       69.74
          1 |      1,383       13.83       83.57
          2 |        617        6.17       89.74
          3 |        346        3.46       93.20
          4 |        242        2.42       95.62
          5 |        144        1.44       97.06
          6 |         88        0.88       97.94
          7 |         66        0.66       98.60
          8 |         51        0.51       99.11
          9 |         29        0.29       99.40
         10 |         19        0.19       99.59
         11 |         10        0.10       99.69
         12 |          8        0.08       99.77
         13 |          8        0.08       99.85
         14 |          4        0.04       99.89
         15 |          4        0.04       99.93
         16 |          1        0.01       99.94
         17 |          1        0.01       99.95
         18 |          2        0.02       99.97
         19 |          1        0.01       99.98
         20 |          1        0.01       99.99
         23 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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