Frequencies for first 10,000 rows of smsares variable in natl2001 dataset :

PSMA/MSA of |
  Residence |
     (NCHS) |      Freq.     Percent        Cum.
------------+-----------------------------------
        000 |      3,089       30.89       30.89
        012 |        245        2.45       33.34
        016 |          4        0.04       33.38
        030 |         36        0.36       33.74
        032 |      2,231       22.31       56.05
        063 |         75        0.75       56.80
        072 |        320        3.20       60.00
        076 |          1        0.01       60.01
        077 |        307        3.07       63.08
        092 |          1        0.01       63.09
        094 |        267        2.67       65.76
        100 |          1        0.01       65.77
        101 |          1        0.01       65.78
        129 |        725        7.25       73.03
        140 |          1        0.01       73.04
        167 |          1        0.01       73.05
        169 |          1        0.01       73.06
        184 |      1,297       12.97       86.03
        188 |        804        8.04       94.07
        210 |          1        0.01       94.08
        212 |          2        0.02       94.10
        246 |          1        0.01       94.11
        287 |        369        3.69       97.80
        296 |          2        0.02       97.82
        999 |        217        2.17       99.99
        ZZZ |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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