Frequencies for first 10,000 rows of pct012d076 variable in sf12000860us19 dataset :

   73 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,784       87.84       87.84
          1 |        654        6.54       94.38
          2 |        231        2.31       96.69
          3 |        110        1.10       97.79
          4 |         71        0.71       98.50
          5 |         34        0.34       98.84
          6 |         22        0.22       99.06
          7 |         18        0.18       99.24
          8 |         15        0.15       99.39
          9 |         13        0.13       99.52
         10 |          6        0.06       99.58
         11 |          7        0.07       99.65
         12 |          2        0.02       99.67
         13 |          5        0.05       99.72
         14 |          3        0.03       99.75
         15 |          3        0.03       99.78
         16 |          4        0.04       99.82
         18 |          2        0.02       99.84
         19 |          2        0.02       99.86
         20 |          1        0.01       99.87
         22 |          2        0.02       99.89
         23 |          1        0.01       99.90
         24 |          1        0.01       99.91
         28 |          2        0.02       99.93
         31 |          1        0.01       99.94
         45 |          1        0.01       99.95
         47 |          1        0.01       99.96
         63 |          1        0.01       99.97
         79 |          1        0.01       99.98
         83 |          1        0.01       99.99
        135 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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