Year annual % growth 1999 4.39882519239147 2000 -4.65962561630769 2001 -3.6448371397221 2002 7.0631797400341 2003 2.75946021676243 2004 11.7566546687891 2005 5.415360268697 2006 -0.352615399880051 2007 19.9573296275978 2008 3.25558881007568 2009 10.7817492680776 2010 9.79354419838853 2011 4.64822728791682 2012 13.4542354010609 2013 10.47940279155 2014 2.24165375985672 2015 3.26352959152842 2016 10.944818675049 2017 5.66384135119013