Frequencies for first 10,000 rows of pct012n187 variable in sf12010860us33 dataset :

   80 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,835       98.35       98.35
          1 |        131        1.31       99.66
          2 |         20        0.20       99.86
          3 |          7        0.07       99.93
          4 |          3        0.03       99.96
          5 |          1        0.01       99.97
          7 |          1        0.01       99.98
          8 |          1        0.01       99.99
         11 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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