Year annual % 2002 14.1596470116325 2003 10.3302881236823 2004 7.82908704883235 2005 10.8343588481414 2006 7.34144608278556 2007 11.3918966807102 2008 17.489448642993 2009 7.42764305914911 2010 7.28992796890228 2011 8.48816751849401 2012 6.83178703418548 2013 7.577306817414 2014 9.86111285574928 2015 7.74869687621306 2016 8.83424868336494 2017 12.4196323907137 2018 23.5635148953742