. operating earnings increased 30% ( 30 % ) from 2005 and more than 100% ( 100 % ) from 2004 principally due to the impact of the higher average sales prices . input costs for wood and energy were higher in 2006 than in 2005 . manufacturing operations were unfavorable , driven primarily by poor operations at our riegel- wood , north carolina mill . brazil ian paper net sales for 2006 of $ 496 mil- lion were higher than the $ 465 million in 2005 and the $ 417 million in 2004