Frequencies for first 10,000 rows of ocntypop variable in natlterr2011 dataset :

  Occurence |
     County |
 Population |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      2,289       22.89       22.89
          2 |      1,286       12.86       35.75
          3 |      5,046       50.46       86.21
          9 |      1,379       13.79      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015