Frequencies for first 10,000 rows of divres variable in natl1981 dataset :

Division of |
  residence |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          1        0.01        0.01
          3 |          4        0.04        0.05
          5 |        117        1.17        1.22
          6 |      9,878       98.78      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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