Commodity2005200620072008200920102011
Chalk$5,390,747$3,108,996$8,393,592$6,653,196$4,524,099$5,986,092$15,378,092
Total$5,390,747$3,108,996$8,393,592$6,653,196$4,524,099$5,986,092$15,378,092