Frequencies for first 10,000 rows of pct012c194 variable in sf12010860us22 dataset :

   87 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,819       98.19       98.19
          1 |        161        1.61       99.80
          2 |         11        0.11       99.91
          3 |          3        0.03       99.94
          4 |          2        0.02       99.96
          5 |          1        0.01       99.97
          6 |          1        0.01       99.98
          7 |          1        0.01       99.99
          8 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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