Frequencies for first 10,000 rows of popsmas variable in natlterr1995 dataset :

   PMSA/MSA |
 Population |
       Size |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,942       69.42       69.42
          2 |      1,427       14.27       83.69
          9 |      1,625       16.25       99.94
          Z |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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