Commodity2005200620072008200920102011
Chalk$2,035,640$2,374,077$3,148,869$2,789,355$2,276,265$3,083,226$4,116,711
Total$2,035,640$2,374,077$3,148,869$2,789,355$2,276,265$3,083,226$4,116,711