pre_text: stock performance graph the following graph sets forth the cumulative total shareholder return on our series a common stock , series b common stock and series c common stock as compared with the cumulative total return of the companies listed in the standard and poor 2019s 500 stock index ( 201cs&p 500 index 201d ) and a peer group of companies comprised of cbs corporation class b common stock , news corporation class a common stock , scripps network interactive , inc. , time warner , inc. , viacom , inc . class b common stock and the walt disney company . the graph assumes $ 100 originally invested on september 18 , 2008 , the date upon which our common stock began trading , in each of our series a common stock , series b common stock and series c common stock , the s&p 500 index , and the stock of our peer group companies , including reinvestment of dividends , for the period september 18 , 2008 through december 31 , 2008 and the years ended december 31 , 2009 , 2010 and 2011 . of cash on hand , cash generated by operations , borrowings under our revolving credit facility and future financing transactions . under the program , management is authorized to purchase shares from time to time through open market purchases or privately negotiated transactions at prevailing prices as permitted by securities laws and other legal requirements , and subject to stock price , business conditions , market conditions and other factors . the repurchase program does not have an expiration date . the above repurchases were funded using cash on hand . there were no repurchases of our series a common stock or series b common stock during the three months ended december 31 , 2011 . december 31 , december 31 , december 31 , december 31 .
post_text: .
table: December 31, 2008 December 31, 2009 December 31, 2010 December 31, 2011
table: DISCA $102.53 $222.09 $301.96 $296.67
table: DISCB $78.53 $162.82 $225.95 $217.56
table: DISCK $83.69 $165.75 $229.31 $235.63
table: S&P 500 $74.86 $92.42 $104.24 $104.23
table: Peer Group $68.79 $100.70 $121.35 $138.19
question: Analyse this data from a financial earnings document. what was the percentage cumulative total shareholder return on discb from september 18 , 2008 to december 31 , 2011?