Year annual % growth 1996 6.597245871205672 1997 9.025945372492345 1998 8.213262194987792 1999 4.288401076162842 2000 9.399038444142576 2001 11.167990662959014 2002 7.397453495650723 2003 9.210462688229697 2004 8.810084684080948 2005 13.154428005382002 2006 9.145914922364227 2007 14.952594584759822 2008 -1.983073751927435 2009 -6.946654338778032 2010 -13.645936593225144 2011 3.2173610837944864 2012 4.677270314319969 2013 3.5233986043542274 2014 2.1637666633904473 2015 4.260549336746536 2016 5.746344583289215 2017 4.516028345490895 2018 4.634459457398933 2019 1.681935923254116 2020 -1.663944140501556 2021 5.204734269295201