Frequencies for first 10,000 rows of smsarfip variable in natlterr2000 dataset :

       FIPS |
PMSA/MSA of |
  Residence |      Freq.     Percent        Cum.
------------+-----------------------------------
       0000 |      1,571       15.71       15.71
       0060 |        385        3.85       19.56
       0470 |        435        4.35       23.91
       1310 |        862        8.62       32.53
       4840 |        618        6.18       38.71
       6360 |        953        9.53       48.24
       7440 |      5,176       51.76      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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