Commodity2005200620072008200920102011
Chalk$1,145,520$2,887,314$2,221,812$1,254,456$1,001,540$2,122,747$2,440,112
Total$1,145,520$2,887,314$2,221,812$1,254,456$1,001,540$2,122,747$2,440,112