Frequencies for first 10,000 rows of pct012e033 variable in sf12000860us20 dataset :

   30 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,666       96.66       96.66
          1 |        279        2.79       99.45
          2 |         43        0.43       99.88
          3 |         11        0.11       99.99
          4 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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