Year annual % growth 2001 2.40537240537242 2002 -1.08501251937524 2003 4.5594262295082 2004 1.9165922125832 2005 2.8957638142639 2006 2.82526246358489 2007 0.657507884749009 2008 -0.334572490706307 2009 1.85431875099908 2010 -0.211875490452528 2011 2.98725534332722 2012 -0.514920128801379 2013 2.08464628066243 2014 2.25892622578286 2015 5.05947884852971 2016 2.43393123335748 2017 3.6547073899019 2018 7.35465918137324