Frequencies for first 10,000 rows of smsarfip variable in natl1992 dataset :

  FIPS SMSA |
         of |
  Residence |      Freq.     Percent        Cum.
------------+-----------------------------------
       0000 |      2,883       28.83       28.83
       0450 |        234        2.34       31.17
       0520 |          2        0.02       31.19
       0920 |         14        0.14       31.33
       1000 |      2,339       23.39       54.72
       1600 |          1        0.01       54.73
       1800 |         36        0.36       55.09
       2030 |        343        3.43       58.52
       2180 |        367        3.67       62.19
       2560 |          1        0.01       62.20
       2650 |        292        2.92       65.12
       2800 |          1        0.01       65.13
       3320 |          1        0.01       65.14
       3440 |        724        7.24       72.38
       3980 |          1        0.01       72.39
       4100 |          1        0.01       72.40
       4680 |          1        0.01       72.41
       4920 |          1        0.01       72.42
       5160 |      1,355       13.55       85.97
       5240 |        888        8.88       94.85
       5640 |          1        0.01       94.86
       6015 |          1        0.01       94.87
       6025 |         14        0.14       95.01
       6080 |          2        0.02       95.03
       7320 |          1        0.01       95.04
       7520 |          1        0.01       95.05
       8240 |          1        0.01       95.06
       8280 |          1        0.01       95.07
       8320 |          1        0.01       95.08
       8600 |        291        2.91       97.99
       9999 |        201        2.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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