pre_text: performance graph the following graph compares the yearly change in the cumulative total stockholder return for our last five full fiscal years , based upon the market price of our common stock , with the cumulative total return on a nasdaq composite index ( u.s . companies ) and a peer group , the nasdaq medical equipment-sic code 3840-3849 index , which is comprised of medical equipment companies , for that period . the performance graph assumes the investment of $ 100 on march 31 , 2007 in our common stock , the nasdaq composite index ( u.s . companies ) and the peer group index , and the reinvestment of any and all dividends. .
post_text: this graph is not 201csoliciting material 201d under regulation 14a or 14c of the rules promulgated under the securities exchange act of 1934 , is not deemed filed with the securities and exchange commission and is not to be incorporated by reference in any of our filings under the securities act of 1933 , as amended , or the exchange act whether made before or after the date hereof and irrespective of any general incorporation language in any such filing . transfer agent american stock transfer & trust company , 59 maiden lane , new york , ny 10038 , is our stock transfer agent. .
table: 3/31/2007 3/31/2008 3/31/2009 3/31/2010 3/31/2011 3/31/2012
table: ABIOMED, Inc 100 96.19 35.87 75.55 106.37 162.45
table: Nasdaq Composite Index 100 94.11 63.12 99.02 114.84 127.66
table: Nasdaq Medical Equipment SIC Code 3840-3849 100 82.91 41.56 77.93 94.54 74.40
question: Analyse this data from a financial earnings document. what is the roi of an investment in nasdaq composite index from march 2007 to march 2010?