Commodity2005200620072008200920102011
Chalk$1,590,429$1,114,930$2,685,382$3,340,168$2,128,761$1,532,447$1,572,011
Total$1,590,429$1,114,930$2,685,382$3,340,168$2,128,761$1,532,447$1,572,011