Frequencies for first 10,000 rows of pct012n183 variable in sf12000860us29 dataset :

   76 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,834       98.34       98.34
          1 |        131        1.31       99.65
          2 |         21        0.21       99.86
          3 |          3        0.03       99.89
          4 |          4        0.04       99.93
          5 |          1        0.01       99.94
          6 |          2        0.02       99.96
          8 |          1        0.01       99.97
          9 |          1        0.01       99.98
         11 |          1        0.01       99.99
         19 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2017