. u.s . market pulp sales in 2006 were $ 509 mil- lion , compared with $ 526 million and $ 437 million in 2005 and 2004 , respectively . sales volumes in 2006 were down from 2005 levels , primarily for paper and tissue pulp . average sales price realizations were higher in 2006 , reflecting higher average prices for fluff pulp and bleached hardwood and softwood pulp