Frequencies for first 10,000 rows of pct012e132 variable in sf12010860us24 dataset :

   25 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,645       96.45       96.45
          1 |        304        3.04       99.49
          2 |         37        0.37       99.86
          3 |          8        0.08       99.94
          4 |          3        0.03       99.97
          5 |          2        0.02       99.99
         11 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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