Frequencies for countyfips variable in countynh1989 dataset :

    3-digit |
County FIPS |
       code |      Freq.     Percent        Cum.
------------+-----------------------------------
        000 |          1        9.09        9.09
        001 |          1        9.09       18.18
        003 |          1        9.09       27.27
        005 |          1        9.09       36.36
        007 |          1        9.09       45.45
        009 |          1        9.09       54.55
        011 |          1        9.09       63.64
        013 |          1        9.09       72.73
        015 |          1        9.09       81.82
        017 |          1        9.09       90.91
        019 |          1        9.09      100.00
------------+-----------------------------------
      Total |         11      100.00

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