Frequencies for first 10,000 rows of divres variable in natl1974 dataset :

Division of |
  residence |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          1        0.01        0.01
          1 |          1        0.01        0.02
          2 |          3        0.03        0.05
          3 |          7        0.07        0.12
          4 |          3        0.03        0.15
          5 |        118        1.18        1.33
          6 |      9,863       98.63       99.96
          7 |          2        0.02       99.98
          9 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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