Frequencies for first 10,000 rows of pct012n074 variable in sf12000860us29 dataset :

   71 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,849       98.49       98.49
          1 |        126        1.26       99.75
          2 |         14        0.14       99.89
          3 |          2        0.02       99.91
          4 |          3        0.03       99.94
          5 |          4        0.04       99.98
          6 |          1        0.01       99.99
         10 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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