Frequencies for first 10,000 rows of pct012n078 variable in sf12010880us33 dataset :

   75 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,865       98.65       98.65
          1 |        109        1.09       99.74
          2 |         12        0.12       99.86
          3 |          8        0.08       99.94
          4 |          1        0.01       99.95
          5 |          1        0.01       99.96
          6 |          1        0.01       99.97
          8 |          1        0.01       99.98
          9 |          1        0.01       99.99
         10 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 May 2017