Frequencies for first 10,000 rows of pct012k072 variable in sf12000860us26 dataset :

   69 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,608       96.08       96.08
          1 |        331        3.31       99.39
          2 |         35        0.35       99.74
          3 |          8        0.08       99.82
          4 |          7        0.07       99.89
          5 |          3        0.03       99.92
          6 |          2        0.02       99.94
          7 |          2        0.02       99.96
          8 |          1        0.01       99.97
         10 |          2        0.02       99.99
         29 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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