Frequencies for first 10,000 rows of pct012o188 variable in sf12010860us34 dataset :

   81 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,045       90.45       90.45
          1 |        773        7.73       98.18
          2 |        136        1.36       99.54
          3 |         32        0.32       99.86
          4 |          8        0.08       99.94
          5 |          3        0.03       99.97
          6 |          2        0.02       99.99
          8 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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