Year annual % 2001 1.63908043573106 2002 -1.81968866367069 2003 3.8739618062836 2004 1.23438489307853 2005 2.24195425403025 2006 2.45131367187261 2007 0.307071148375442 2008 -0.980945924705551 2009 1.08931929771903 2010 -0.700815826655671 2011 2.55182055274936 2012 -1.4054890916222 2013 0.6613418597546 2014 0.237317061515483 2015 2.5820228365147 2016 0.11623520322442 2017 0.854473916047198 2018 3.90642388729448