Frequencies for first 10,000 rows of pct012c183 variable in sf12000860us18 dataset :

   76 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,616       96.16       96.16
          1 |        317        3.17       99.33
          2 |         34        0.34       99.67
          3 |         17        0.17       99.84
          4 |          3        0.03       99.87
          5 |          3        0.03       99.90
          6 |          4        0.04       99.94
          8 |          1        0.01       99.95
          9 |          2        0.02       99.97
         10 |          1        0.01       99.98
         13 |          1        0.01       99.99
         19 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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