Frequencies for first 10,000 rows of pct012e137 variable in sf12010860us24 dataset :

   30 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,644       96.44       96.44
          1 |        297        2.97       99.41
          2 |         46        0.46       99.87
          3 |          8        0.08       99.95
          4 |          2        0.02       99.97
          5 |          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