Frequencies for first 10,000 rows of pct020e012 variable in sf12010860us37 dataset :

(non-correc |
    tional) |
      (202) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,991       99.91       99.91
          1 |          7        0.07       99.98
          2 |          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