Frequencies for first 10,000 rows of pct012e032 variable in sf12000860us20 dataset :

   29 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,710       97.10       97.10
          1 |        235        2.35       99.45
          2 |         47        0.47       99.92
          3 |          6        0.06       99.98
          4 |          1        0.01       99.99
          7 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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