Frequencies for first 10,000 rows of cntocfip variable in natl1998 dataset :

  County of |
 Occurrence |
     (FIPS) |      Freq.     Percent        Cum.
------------+-----------------------------------
      01015 |        302        3.02        3.02
      01073 |      2,298       22.98       26.00
      01089 |        812        8.12       34.12
      01097 |      1,260       12.60       46.72
      01101 |        982        9.82       56.54
      01103 |        346        3.46       60.00
      01125 |        459        4.59       64.59
      01999 |      3,541       35.41      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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