Frequencies for first 10,000 rows of pct012a102 variable in sf12010860us20 dataset :

   99 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,830       88.30       88.30
          1 |        849        8.49       96.79
          2 |        217        2.17       98.96
          3 |         59        0.59       99.55
          4 |         26        0.26       99.81
          5 |         13        0.13       99.94
          6 |          3        0.03       99.97
          7 |          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