Frequencies for first 10,000 rows of smsares variable in natl1977 dataset :

   Standard |
Metropolita |
          n |
Statistical |
  Area SMSA |
         of |
  residence |      Freq.     Percent        Cum.
------------+-----------------------------------
        000 |      5,363       53.63       53.63
        003 |          1        0.01       53.64
        026 |      1,915       19.15       72.79
        038 |          1        0.01       72.80
        041 |          1        0.01       72.81
        042 |          1        0.01       72.82
        048 |         41        0.41       73.23
        074 |        291        2.91       76.14
        089 |        336        3.36       79.50
        114 |          1        0.01       79.51
        124 |          1        0.01       79.52
        128 |      1,136       11.36       90.88
        131 |        604        6.04       96.92
        136 |          1        0.01       96.93
        149 |         10        0.10       97.03
        174 |          1        0.01       97.04
        203 |          1        0.01       97.05
        212 |        294        2.94       99.99
        218 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 Jan 2016