Obtuse Ltd has recorded the following end-of-year share prices and paid dividends: Year Price Dividend 2010 $1.20 $0.00 2011 $1.35 $0.05 2012 $1.12 $0.00 2013 $1.47 $0.00 2014 $1.71 $0.05 2015 $1.69 $0.00 2016 $1.82 $0.06 2017 $1.87 $0.10 Calculate the yearly returns for this share. Calculate the standard deviation of returns for the company's shares.