Frequencies for first 10,000 rows of pct012e034 variable in sf12010860us24 dataset :

   31 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,656       96.56       96.56
          1 |        286        2.86       99.42
          2 |         46        0.46       99.88
          3 |         11        0.11       99.99
          5 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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