Frequencies for first 10,000 rows of pct012e132 variable in sf12000860us20 dataset :

   25 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,679       96.79       96.79
          1 |        265        2.65       99.44
          2 |         46        0.46       99.90
          3 |          8        0.08       99.98
          5 |          1        0.01       99.99
          6 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2017