Frequencies for first 10,000 rows of cntocfip variable in natlterr2000 dataset :

  County of |
 Occurrence |
     (FIPS) |      Freq.     Percent        Cum.
------------+-----------------------------------
      72021 |      1,358       13.58       13.58
      72025 |        756        7.56       21.14
      72031 |        291        2.91       24.05
      72097 |        749        7.49       31.54
      72113 |      1,144       11.44       42.98
      72127 |      2,405       24.05       67.03
      72999 |      3,297       32.97      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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