Commodity2005200620072008200920102011
Chalk$1,949,325$1,987,089$2,648,605$2,606,185$2,054,334$1,905,324$1,640,795
Total$1,949,325$1,987,089$2,648,605$2,606,185$2,054,334$1,905,324$1,640,795