Frequencies for first 10,000 rows of cntyrfip variable in natlterr1995 dataset :

  County of |
  Residence |
     (FIPS) |      Freq.     Percent        Cum.
------------+-----------------------------------
      00000 |          2        0.02        0.02
      12000 |          3        0.03        0.05
      36000 |          1        0.01        0.06
      72021 |        524        5.24        5.30
      72025 |        368        3.68        8.98
      72031 |        467        4.67       13.65
      72097 |        284        2.84       16.49
      72113 |        575        5.75       22.24
      72127 |      1,089       10.89       33.13
      72999 |      6,684       66.84       99.97
      78999 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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