Variable list from NCCounty03q4.txt
    *note* tab-delimited

  fips     USGov county code
  cname    County name
  cpop     County population
  cpopr    County population rank
  cpop00   County population in 2000
  cpop00r  County population rank in 2000
  unemp03  unemployment rate in 2003 (%)
  unemp02  unemployment rate in 2002 (%)
  hsgrad   high school graduation rate (%)
  sat      average SAT scores 2003
  bsba     percent of pop with BS or BA degree
  hinc     median household income 2000
  pcpi90   per capita personal income 1990
  pcpi01   per capita personal income 2001
  pov      poverty rate (%)
  wwagall  weekly wage rate -- all workers
  wwagprv  weekly wage rate -- retail
  retail   gross retail sales 
  poptmd   population to number of doctors
  poptrn   population to number of nurses
  poptdnt  population to number of dentists