How do you find Cummulative Return?

Using data from the following table, calculate the return for investing in this stock from January 1 to December 31. Prices are after the dividend has been paid Stock and Dividend Data Price $33.88 Dividend Date Jan-1 Feb-5 S30.67 $ May-14 S 29.49 S Aug-13S 32.38 S Nov-12 S39.07 S 0.17 0.17 0.17 0.17 $0.00 Dec-31 S99 Cumulative Return Date Jan-1 Feb-5 May-14 Aug-13 Nov-12 Dec-31 Return -9.0% -3.3% 10.4% 21.2% 7.5%