Commodity2005200620072008200920102011
Chalk$1,313,798$1,198,597$1,513,559$2,168,398$1,793,120$1,641,266$1,526,040
Total$1,313,798$1,198,597$1,513,559$2,168,398$1,793,120$1,641,266$1,526,040