Consider a sample of year-end prices for Alphabet, Inc. (Google) over a five year period. Google did not pay a dividend over the sample period. \begin{tabular}{lr} YEAR & PRICE \\ \hline 2012 & $576.74 \\ \hline 2011 & $602.15 \\ \hline 2010 & $533.56 \\ \hline 2009 & $341.25 \\ \hline 2008 & $560.43 \\ \hline 2007 & $512.62 \end{tabular} Calculate the standard deviation in the returns. Answer format: Percentage Round to: 2 decimal places (Example: 9.24\%, \% sign required. Will accept decimal format rounded to 4 decimal places (ex: 0.0924))