Frequencies for first 10,000 rows of smsarfip variable in natl1995 dataset :

  FIPS SMSA |
         of |
  Residence |      Freq.     Percent        Cum.
------------+-----------------------------------
       0000 |      3,442       34.42       34.42
       0450 |        311        3.11       37.53
       0520 |          1        0.01       37.54
       0640 |          1        0.01       37.55
       0880 |          1        0.01       37.56
       0920 |          9        0.09       37.65
       1000 |      2,169       21.69       59.34
       1560 |          2        0.02       59.36
       1760 |          1        0.01       59.37
       1800 |        105        1.05       60.42
       2030 |        254        2.54       62.96
       2160 |          1        0.01       62.97
       2180 |        357        3.57       66.54
       2650 |        331        3.31       69.85
       2680 |          1        0.01       69.86
       2980 |          1        0.01       69.87
       3160 |          1        0.01       69.88
       3440 |        821        8.21       78.09
       3960 |          1        0.01       78.10
       4900 |          1        0.01       78.11
       5160 |        714        7.14       85.25
       5240 |        913        9.13       94.38
       5960 |          1        0.01       94.39
       6015 |          1        0.01       94.40
       6080 |          3        0.03       94.43
       6520 |          1        0.01       94.44
       7400 |          1        0.01       94.45
       8600 |        348        3.48       97.93
       9999 |        207        2.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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