Frequencies for first 10,000 rows of pct012e129 variable in sf12010860us24 dataset :

   22 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,628       96.28       96.28
          1 |        299        2.99       99.27
          2 |         57        0.57       99.84
          3 |         12        0.12       99.96
          4 |          3        0.03       99.99
          9 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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