Frequencies for first 10,000 rows of smsares variable in natl1974 dataset :

   Standard |
Metropolita |
          n |
Statistical |
  Area SMSA |
         of |
  residence |      Freq.     Percent        Cum.
------------+-----------------------------------
        000 |      5,193       51.93       51.93
        014 |          2        0.02       51.95
        016 |          1        0.01       51.96
        024 |          2        0.02       51.98
        026 |      1,921       19.21       71.19
        037 |          1        0.01       71.20
        038 |          2        0.02       71.22
        041 |          1        0.01       71.23
        048 |         67        0.67       71.90
        057 |          1        0.01       71.91
        058 |          1        0.01       71.92
        074 |        224        2.24       74.16
        078 |          1        0.01       74.17
        089 |        588        5.88       80.05
        097 |          1        0.01       80.06
        099 |          1        0.01       80.07
        114 |          1        0.01       80.08
        118 |          1        0.01       80.09
        128 |      1,041       10.41       90.50
        131 |        602        6.02       96.52
        134 |          3        0.03       96.55
        148 |          1        0.01       96.56
        149 |         14        0.14       96.70
        155 |          1        0.01       96.71
        163 |          1        0.01       96.72
        179 |          2        0.02       96.74
        188 |          1        0.01       96.75
        212 |        323        3.23       99.98
        220 |          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