Frequencies for first 10,000 rows of pct012k068 variable in sf12000860us26 dataset :

   65 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,525       95.25       95.25
          1 |        400        4.00       99.25
          2 |         39        0.39       99.64
          3 |         23        0.23       99.87
          4 |          2        0.02       99.89
          5 |          2        0.02       99.91
          7 |          2        0.02       99.93
         10 |          1        0.01       99.94
         11 |          1        0.01       99.95
         14 |          1        0.01       99.96
         15 |          1        0.01       99.97
         21 |          1        0.01       99.98
         23 |          1        0.01       99.99
         25 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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