Frequencies for first 10,000 rows of pct012c186 variable in sf12000860us18 dataset :

   79 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,683       96.83       96.83
          1 |        257        2.57       99.40
          2 |         38        0.38       99.78
          3 |         10        0.10       99.88
          4 |          2        0.02       99.90
          5 |          3        0.03       99.93
          7 |          3        0.03       99.96
          8 |          2        0.02       99.98
         11 |          1        0.01       99.99
         32 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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