Frequencies for first 10,000 rows of pct012f186 variable in sf12000860us21 dataset :

   79 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,313       93.13       93.13
          1 |        334        3.34       96.47
          2 |        124        1.24       97.71
          3 |         63        0.63       98.34
          4 |         47        0.47       98.81
          5 |         30        0.30       99.11
          6 |         20        0.20       99.31
          7 |          6        0.06       99.37
          8 |          8        0.08       99.45
          9 |          9        0.09       99.54
         10 |          4        0.04       99.58
         12 |          5        0.05       99.63
         13 |          7        0.07       99.70
         14 |          3        0.03       99.73
         15 |          3        0.03       99.76
         16 |          3        0.03       99.79
         17 |          1        0.01       99.80
         18 |          2        0.02       99.82
         19 |          4        0.04       99.86
         20 |          3        0.03       99.89
         21 |          2        0.02       99.91
         22 |          1        0.01       99.92
         23 |          2        0.02       99.94
         25 |          1        0.01       99.95
         28 |          1        0.01       99.96
         30 |          1        0.01       99.97
         36 |          1        0.01       99.98
         37 |          1        0.01       99.99
         39 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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