Commodity2005200620072008200920102011
Chalk$2,588,872$2,935,805$4,747,146$9,244,557$4,289,203$1,641,293$2,665,067
Total$2,588,872$2,935,805$4,747,146$9,244,557$4,289,203$1,641,293$2,665,067