Frequencies for first 10,000 rows of pct012c189 variable in sf12010860us22 dataset :

   82 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,674       96.74       96.74
          1 |        267        2.67       99.41
          2 |         39        0.39       99.80
          3 |          9        0.09       99.89
          4 |          2        0.02       99.91
          5 |          2        0.02       99.93
          6 |          1        0.01       99.94
          7 |          2        0.02       99.96
          8 |          1        0.01       99.97
         10 |          1        0.01       99.98
         12 |          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