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

  County of |
 Occurrence |
     (FIPS) |      Freq.     Percent        Cum.
------------+-----------------------------------
      72021 |      1,375       13.75       13.75
      72025 |        919        9.19       22.94
      72031 |        408        4.08       27.02
      72097 |        909        9.09       36.11
      72113 |      1,180       11.80       47.91
      72127 |      2,178       21.78       69.69
      72999 |      3,031       30.31      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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