Frequencies for first 10,000 rows of pct013e009 variable in sf12000860us31 dataset :

   21 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,650       96.50       96.50
          1 |        285        2.85       99.35
          2 |         42        0.42       99.77
          3 |         11        0.11       99.88
          4 |          8        0.08       99.96
          5 |          3        0.03       99.99
          8 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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