Frequencies for first 10,000 rows of dmar variable in natl1987 dataset :

    Marital |
     Status |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,181       71.81       71.81
          2 |      2,818       28.18       99.99
          9 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 Jan 2016