Frequencies for first 10,000 rows of pct012n075 variable in sf12010880us33 dataset :

   72 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,845       98.45       98.45
          1 |        119        1.19       99.64
          2 |         18        0.18       99.82
          3 |          9        0.09       99.91
          4 |          2        0.02       99.93
          5 |          2        0.02       99.95
          6 |          2        0.02       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 , 8 May 2017