Frequencies for first 10,000 rows of pct012b100 variable in sf12010860us21 dataset :

   97 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,632       96.32       96.32
          1 |        283        2.83       99.15
          2 |         57        0.57       99.72
          3 |         21        0.21       99.93
          4 |          4        0.04       99.97
          5 |          2        0.02       99.99
          6 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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