Frequencies for first 10,000 rows of pct012f188 variable in sf12010860us25 dataset :

   81 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,156       91.56       91.56
          1 |        432        4.32       95.88
          2 |        140        1.40       97.28
          3 |         73        0.73       98.01
          4 |         56        0.56       98.57
          5 |         30        0.30       98.87
          6 |         19        0.19       99.06
          7 |         21        0.21       99.27
          8 |          6        0.06       99.33
          9 |         11        0.11       99.44
         10 |          6        0.06       99.50
         11 |          4        0.04       99.54
         12 |          8        0.08       99.62
         13 |          5        0.05       99.67
         14 |          4        0.04       99.71
         15 |          3        0.03       99.74
         16 |          3        0.03       99.77
         17 |          4        0.04       99.81
         18 |          1        0.01       99.82
         19 |          2        0.02       99.84
         20 |          2        0.02       99.86
         22 |          3        0.03       99.89
         23 |          1        0.01       99.90
         24 |          4        0.04       99.94
         26 |          2        0.02       99.96
         31 |          2        0.02       99.98
         34 |          1        0.01       99.99
         40 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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