Frequencies for first 10,000 rows of smsares variable in natl1978 dataset :

   Standard |
Metropolita |
          n |
Statistical |
  Area SMSA |
         of |
  residence |      Freq.     Percent        Cum.
------------+-----------------------------------
        000 |      5,171       51.71       51.71
        002 |          1        0.01       51.72
        014 |          2        0.02       51.74
        019 |          1        0.01       51.75
        026 |      1,824       18.24       69.99
        041 |          1        0.01       70.00
        044 |          2        0.02       70.02
        047 |          1        0.01       70.03
        048 |         59        0.59       70.62
        067 |          1        0.01       70.63
        069 |          1        0.01       70.64
        074 |        250        2.50       73.14
        087 |          1        0.01       73.15
        089 |        640        6.40       79.55
        092 |          1        0.01       79.56
        095 |          1        0.01       79.57
        124 |          2        0.02       79.59
        128 |      1,273       12.73       92.32
        131 |        534        5.34       97.66
        136 |          1        0.01       97.67
        139 |          1        0.01       97.68
        149 |          7        0.07       97.75
        155 |          1        0.01       97.76
        212 |        222        2.22       99.98
        218 |          1        0.01       99.99
        ZZZ |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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