. despite higher net sales , operating profits for 2006 of $ 122 million were down from $ 134 million in 2005 and $ 166 million in 2004 , due principally to incremental costs associated with an extended mill outage in mogi guacu to convert to an elemental-chlorine-free bleaching process , to rebuild the primary recovery boiler , and for other environmental upgrades . european papers net sales in 2006 were $ 1.5 bil- lion , compared with $ 1.4 billion in 2005 and $ 1.5 bil- lion in 2004