Commodity2005200620072008200920102011
Chalk$2,112,161$1,913,782$3,674,208$3,211,648$2,251,825$2,499,208$2,516,378
Total$2,112,161$1,913,782$3,674,208$3,211,648$2,251,825$2,499,208$2,516,378