Commodity2005200620072008200920102011
Chalk$3,623,112$3,067,106$4,168,693$8,306,306$2,917,534$2,451,412$2,692,632
Total$3,623,112$3,067,106$4,168,693$8,306,306$2,917,534$2,451,412$2,692,632