Frequencies for first 10,000 rows of smsares variable in natl1991 dataset :

PSMA/MSA of |
  Residence |      Freq.     Percent        Cum.
------------+-----------------------------------
        000 |      3,203       32.03       32.03
        004 |          1        0.01       32.04
        010 |          1        0.01       32.05
        015 |        379        3.79       35.84
        019 |          2        0.02       35.86
        021 |          1        0.01       35.87
        035 |          1        0.01       35.88
        037 |      2,649       26.49       62.37
        071 |         42        0.42       62.79
        080 |        399        3.99       66.78
        085 |        419        4.19       70.97
        100 |        306        3.06       74.03
        107 |          1        0.01       74.04
        109 |          1        0.01       74.05
        128 |          1        0.01       74.06
        132 |        783        7.83       81.89
        159 |          2        0.02       81.91
        166 |          1        0.01       81.92
        175 |          1        0.01       81.93
        192 |        385        3.85       85.78
        196 |        950        9.50       95.28
        200 |          2        0.02       95.30
        209 |          1        0.01       95.31
        220 |          1        0.01       95.32
        222 |          2        0.02       95.34
        223 |          4        0.04       95.38
        268 |          1        0.01       95.39
        296 |        224        2.24       97.63
        999 |        237        2.37      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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