Frequencies for first 10,000 rows of pct012f188 variable in sf12000860us21 dataset :

   81 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,421       94.21       94.21
          1 |        305        3.05       97.26
          2 |         94        0.94       98.20
          3 |         56        0.56       98.76
          4 |         27        0.27       99.03
          5 |         22        0.22       99.25
          6 |         14        0.14       99.39
          7 |         16        0.16       99.55
          8 |          9        0.09       99.64
          9 |         11        0.11       99.75
         10 |          4        0.04       99.79
         11 |          1        0.01       99.80
         12 |          2        0.02       99.82
         13 |          3        0.03       99.85
         14 |          5        0.05       99.90
         15 |          2        0.02       99.92
         17 |          1        0.01       99.93
         19 |          3        0.03       99.96
         21 |          1        0.01       99.97
         22 |          1        0.01       99.98
         26 |          1        0.01       99.99
         35 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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