Frequencies for first 10,000 rows of uld_excbl variable in natl2004 dataset :

      Other |
  Excessive |
 Bleeding U |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        177        1.77        1.77
          2 |      8,849       88.49       90.26
          9 |        974        9.74      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 21 Jan 2016