Frequencies for first 10,000 rows of pct012102 variable in sf12000860us14 dataset :

   99 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,797       87.97       87.97
          1 |        911        9.11       97.08
          2 |        192        1.92       99.00
          3 |         60        0.60       99.60
          4 |         20        0.20       99.80
          5 |         14        0.14       99.94
          6 |          4        0.04       99.98
          7 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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