Frequencies for first 10,000 rows of pct012g180 variable in sf12000860us22 dataset :

   73 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,528       85.28       85.28
          1 |        915        9.15       94.43
          2 |        232        2.32       96.75
          3 |        126        1.26       98.01
          4 |         67        0.67       98.68
          5 |         41        0.41       99.09
          6 |         20        0.20       99.29
          7 |         13        0.13       99.42
          8 |         11        0.11       99.53
          9 |         12        0.12       99.65
         10 |          7        0.07       99.72
         11 |          6        0.06       99.78
         12 |          6        0.06       99.84
         13 |          4        0.04       99.88
         14 |          4        0.04       99.92
         15 |          2        0.02       99.94
         16 |          2        0.02       99.96
         17 |          3        0.03       99.99
         21 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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