Frequencies for first 10,000 rows of pct012c046 variable in sf12000860us18 dataset :

   43 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,467       84.67       84.67
          1 |      1,071       10.71       95.38
          2 |        269        2.69       98.07
          3 |        100        1.00       99.07
          4 |         42        0.42       99.49
          5 |         13        0.13       99.62
          6 |          9        0.09       99.71
          7 |          7        0.07       99.78
          8 |          6        0.06       99.84
          9 |          1        0.01       99.85
         11 |          2        0.02       99.87
         14 |          2        0.02       99.89
         18 |          1        0.01       99.90
         22 |          1        0.01       99.91
         25 |          1        0.01       99.92
         26 |          1        0.01       99.93
         29 |          1        0.01       99.94
         34 |          1        0.01       99.95
         42 |          2        0.02       99.97
         50 |          1        0.01       99.98
         54 |          1        0.01       99.99
         67 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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