Year annual % growth 1996 7.671006552336905 1997 4.795929585392457 1998 2.020335968170926 1999 3.766816529649944 2000 6.837865800392521 2001 4.996498395009709 2002 6.090493685789667 2003 6.300922848978161 2004 8.643074433013439 2005 8.168275608437085 2006 10.501060627607501 2007 11.390893163284915 2008 4.698176430442771 2009 3.0239662218654217 2010 7.210879132485985 2011 4.469669940911729 2012 6.238990103689616 2013 3.8622939791231374 2014 4.75913619668664 2015 2.8500897573329667 2016 3.778896845833188 2017 5.338741811810905 2018 3.2019943245374662 2019 3.086994552502347 2020 -1.4397742502307551 2021 5.3766680290840725