these purchase agreements are not marked to market . the company purchased $ 12.8 million during the year ended december 31 , 2005 , $ 17.6 million during the year ended december 31 , 2004 , and $ 19.3 million during the year ended december 31 , 2003 under these purchase agreements . litigation on may 14 , 1999 , pca was named as a defendant in two consolidated class action complaints which alleged a civil violation of section 1 of the sherman act . the suits , then captioned winoff industries , inc . v