Frequencies for first 10,000 rows of ocntypop variable in natlterr2008 dataset :

  Occurence |
     County |
 Population |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      2,597       25.97       25.97
          2 |      1,064       10.64       36.61
          3 |      5,036       50.36       86.97
          9 |      1,303       13.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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