Frequencies for fipscounty variable in countynh1989 dataset :

FIPS County |
       Code |      Freq.     Percent        Cum.
------------+-----------------------------------
      33000 |          1        9.09        9.09
      33001 |          1        9.09       18.18
      33003 |          1        9.09       27.27
      33005 |          1        9.09       36.36
      33007 |          1        9.09       45.45
      33009 |          1        9.09       54.55
      33011 |          1        9.09       63.64
      33013 |          1        9.09       72.73
      33015 |          1        9.09       81.82
      33017 |          1        9.09       90.91
      33019 |          1        9.09      100.00
------------+-----------------------------------
      Total |         11      100.00

by Jean Roth , jroth@nber.org , 23 Jun 2017