the graph below shows a five-year comparison of the cumulative shareholder return on the company's common stock with the cumulative total return of the s&p small cap 600 index and the russell 1000 index , both of which are published indices . comparison of five-year cumulative total return from december 31 , 2005 to december 31 , 2010 assumes $ 100 invested with reinvestment of dividends period indexed returns .