Frequencies for first 10,000 rows of pct012c164 variable in sf12000860us18 dataset :

   57 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,056       90.56       90.56
          1 |        718        7.18       97.74
          2 |        147        1.47       99.21
          3 |         42        0.42       99.63
          4 |         15        0.15       99.78
          5 |          3        0.03       99.81
          6 |          3        0.03       99.84
          7 |          3        0.03       99.87
          8 |          3        0.03       99.90
         11 |          2        0.02       99.92
         12 |          1        0.01       99.93
         19 |          1        0.01       99.94
         20 |          1        0.01       99.95
         22 |          1        0.01       99.96
         23 |          1        0.01       99.97
         28 |          1        0.01       99.98
         34 |          1        0.01       99.99
         47 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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