Frequencies for first 10,000 rows of pct020d012 variable in sf12010860us37 dataset :

(non-correc |
    tional) |
      (202) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,925       99.25       99.25
          1 |         47        0.47       99.72
          2 |         18        0.18       99.90
          3 |          6        0.06       99.96
          4 |          3        0.03       99.99
          7 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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