Frequencies for first 10,000 rows of smsares variable in natl1986 dataset :

   Standard |
Metropolita |
          n |
Statistical |
  Area SMSA |
         of |
  residence |      Freq.     Percent        Cum.
------------+-----------------------------------
        000 |      3,936       39.36       39.36
        015 |        377        3.77       43.13
        019 |          2        0.02       43.15
        035 |      1,942       19.42       62.57
        041 |          1        0.01       62.58
        057 |          3        0.03       62.61
        058 |          1        0.01       62.62
        062 |          1        0.01       62.63
        066 |         42        0.42       63.05
        093 |        422        4.22       67.27
        102 |        291        2.91       70.18
        122 |        919        9.19       79.37
        127 |          1        0.01       79.38
        128 |          2        0.02       79.40
        177 |      1,444       14.44       93.84
        180 |        478        4.78       98.62
        207 |          9        0.09       98.71
        209 |         10        0.10       98.81
        264 |          1        0.01       98.82
        275 |          1        0.01       98.83
        283 |        115        1.15       99.98
        ZZZ |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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