Please answer the given financial question based on the context.
Context: packaging corporation of america notes to consolidated financial statements ( continued ) december 31 , 2006 4 . stock-based compensation ( continued ) same period was $ 1988000 lower , than if it had continued to account for share-based compensation under apb no . 25 . basic and diluted earnings per share for the year ended december 31 , 2006 were both $ 0.02 lower than if the company had continued to account for share-based compensation under apb no . 25 . prior to the adoption of sfas no . 123 ( r ) , the company presented all tax benefits of deductions resulting from share-based payment arrangements as operating cash flows in the statements of cash flows . sfas no . 123 ( r ) requires the cash flows resulting from the tax benefits from tax deductions in excess of the compensation cost recognized for those share awards ( excess tax benefits ) to be classified as financing cash flows . the excess tax benefit of $ 2885000 classified as a financing cash inflow for the year ended december 31 , 2006 would have been classified as an operating cash inflow if the company had not adopted sfas no . 123 ( r ) . as a result of adopting sfas no 123 ( r ) , unearned compensation previously recorded in stockholders 2019 equity was reclassified against additional paid in capital on january 1 , 2006 . all stock-based compensation expense not recognized as of december 31 , 2005 and compensation expense related to post 2005 grants of stock options and amortization of restricted stock will be recorded directly to additional paid in capital . compensation expense for stock options and restricted stock recognized in the statements of income for the year ended december 31 , 2006 , 2005 and 2004 was as follows : year ended december 31 , ( in thousands ) 2006 2005 2004 .
|( in thousands )|year ended december 31 , 2006|year ended december 31 , 2005|year ended december 31 , 2004|
|stock options|$ -3273 ( 3273 )|$ 2014|$ 2014|
|restricted stock|-2789 ( 2789 )|-1677 ( 1677 )|-663 ( 663 )|
|impact on income before income taxes|-6062 ( 6062 )|-1677 ( 1677 )|-663 ( 663 )|
|income tax benefit|2382|661|260|
|impact on net income|$ -3680 ( 3680 )|$ -1016 ( 1016 )|$ -403 ( 403 )|
.
Question: what percent did restricted stock expense increase from 2004 to 2005?


Answer: The answer is:0.39535