Frequencies for first 10,000 rows of pct012f079 variable in sf12000860us21 dataset :

   76 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,378       93.78       93.78
          1 |        328        3.28       97.06
          2 |        104        1.04       98.10
          3 |         58        0.58       98.68
          4 |         32        0.32       99.00
          5 |         27        0.27       99.27
          6 |         16        0.16       99.43
          7 |          8        0.08       99.51
          8 |         12        0.12       99.63
          9 |          8        0.08       99.71
         10 |          6        0.06       99.77
         11 |          5        0.05       99.82
         12 |          2        0.02       99.84
         13 |          4        0.04       99.88
         15 |          2        0.02       99.90
         16 |          2        0.02       99.92
         17 |          2        0.02       99.94
         19 |          3        0.03       99.97
         20 |          1        0.01       99.98
         25 |          1        0.01       99.99
         28 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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