Frequencies for first 10,000 rows of msa_pop variable in natl2003 dataset :

 Population |
         of |
Statistical |
   Area U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      4,275       42.75       42.75
          2 |          3        0.03       42.78
          9 |      5,717       57.17       99.95
          Z |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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