Frequencies for first 10,000 rows of pct012l093 variable in sf12000860us27 dataset :

   90 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,798       97.98       97.98
          1 |        159        1.59       99.57
          2 |         33        0.33       99.90
          3 |          3        0.03       99.93
          4 |          3        0.03       99.96
          5 |          2        0.02       99.98
         10 |          1        0.01       99.99
         15 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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