Commodity2005200620072008200920102011
Chalk$2,515,288$2,615,550$3,075,975$4,126,192$3,654,977$4,546,234$4,537,842
Total$2,515,288$2,615,550$3,075,975$4,126,192$3,654,977$4,546,234$4,537,842