Frequencies for first 10,000 rows of cntyrfip variable in natl1999 dataset :

  County of |
  Residence |
     (FIPS) |      Freq.     Percent        Cum.
------------+-----------------------------------
      01015 |        263        2.63        2.63
      01073 |      1,512       15.12       17.75
      01089 |        673        6.73       24.48
      01097 |      1,004       10.04       34.52
      01101 |        622        6.22       40.74
      01103 |        278        2.78       43.52
      01125 |        402        4.02       47.54
      01999 |      5,105       51.05       98.59
      12005 |          1        0.01       98.60
      12033 |          1        0.01       98.61
      12091 |          1        0.01       98.62
      12999 |         24        0.24       98.86
      13021 |          1        0.01       98.87
      13067 |          1        0.01       98.88
      13215 |          3        0.03       98.91
      13999 |         24        0.24       99.15
      22073 |          1        0.01       99.16
      22103 |          1        0.01       99.17
      28047 |          4        0.04       99.21
      28059 |         13        0.13       99.34
      28999 |         22        0.22       99.56
      39999 |          4        0.04       99.60
      47999 |         38        0.38       99.98
      48039 |          1        0.01       99.99
      48999 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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