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.

YEAR PRICE

$2012$ $$572\mathrm{.}60$

$2011$ $$607\mathrm{.}40$

$2010$ $$528\mathrm{.}03$

$2009$ $$336\mathrm{.}84$

$2008$ $$563\mathrm{.}99$

$2007$ $$511\mathrm{.}59$

Calculate the geometric return.