pre_text: shareholder return performance presentation the graph presented below compares the cumulative total shareholder return on state street's common stock to the cumulative total return of the s&p 500 index and the s&p financial index over a five-year period . the cumulative total shareholder return assumes the investment of $ 100 in state street common stock and in each index on december 31 , 2007 at the closing price on the last trading day of 2007 , and also assumes reinvestment of common stock dividends . the s&p financial index is a publicly available measure of 80 of the standard & poor's 500 companies , representing 26 diversified financial services companies , 22 insurance companies , 17 real estate companies and 15 banking companies . comparison of five-year cumulative total shareholder return .
post_text: .
table: 2007 2008 2009 2010 2011 2012
table: State Street Corporation $100 $49 $55 $58 $52 $61
table: S&P 500 Index 100 63 80 92 94 109
table: S&P Financial Index 100 45 52 59 49 63
question: Analyse this data from a financial earnings document. what is the roi of an investment in s&p500 index from 2007 to 2009?