Frequencies for first 10,000 rows of popsmas variable in natl2000 dataset :

   PMSA/MSA |
 Population |
       Size |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      5,123       51.23       51.23
          2 |      1,574       15.74       66.97
          9 |      3,303       33.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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