Frequencies for first 10,000 rows of pct012f076 variable in sf12000860us21 dataset :

   73 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,290       92.90       92.90
          1 |        372        3.72       96.62
          2 |        115        1.15       97.77
          3 |         63        0.63       98.40
          4 |         31        0.31       98.71
          5 |         26        0.26       98.97
          6 |         17        0.17       99.14
          7 |         18        0.18       99.32
          8 |         10        0.10       99.42
          9 |         10        0.10       99.52
         10 |          5        0.05       99.57
         11 |          7        0.07       99.64
         12 |          7        0.07       99.71
         13 |          7        0.07       99.78
         14 |          3        0.03       99.81
         15 |          2        0.02       99.83
         16 |          4        0.04       99.87
         17 |          4        0.04       99.91
         18 |          1        0.01       99.92
         20 |          1        0.01       99.93
         21 |          1        0.01       99.94
         25 |          1        0.01       99.95
         27 |          1        0.01       99.96
         28 |          2        0.02       99.98
         32 |          1        0.01       99.99
         33 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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