Frequencies for first 10,000 rows of pct012n172 variable in sf12000860us29 dataset :

   65 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,742       97.42       97.42
          1 |        188        1.88       99.30
          2 |         40        0.40       99.70
          3 |         14        0.14       99.84
          4 |          7        0.07       99.91
          5 |          1        0.01       99.92
          6 |          2        0.02       99.94
          7 |          1        0.01       99.95
          8 |          1        0.01       99.96
          9 |          1        0.01       99.97
         16 |          1        0.01       99.98
         22 |          1        0.01       99.99
         23 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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