Frequencies for first 10,000 rows of divres variable in natl1980 dataset :

Division of |
  residence |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          1        0.01        0.01
          3 |          2        0.02        0.03
          5 |        147        1.47        1.50
          6 |      9,847       98.47       99.97
          9 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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