Frequencies for first 10,000 rows of pct012b204 variable in sf12010860us21 dataset :

   97 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,944       89.44       89.44
          1 |        631        6.31       95.75
          2 |        190        1.90       97.65
          3 |        104        1.04       98.69
          4 |         43        0.43       99.12
          5 |         31        0.31       99.43
          6 |         18        0.18       99.61
          7 |         12        0.12       99.73
          8 |          2        0.02       99.75
          9 |          9        0.09       99.84
         10 |          4        0.04       99.88
         11 |          2        0.02       99.90
         12 |          6        0.06       99.96
         13 |          1        0.01       99.97
         14 |          1        0.01       99.98
         15 |          1        0.01       99.99
         17 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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