Frequencies for first 10,000 rows of pct013e008 variable in sf12000860us31 dataset :

   20 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,633       96.33       96.33
          1 |        298        2.98       99.31
          2 |         54        0.54       99.85
          3 |         11        0.11       99.96
          4 |          2        0.02       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 , 17 Apr 2017