Year annual % change 1997 8.652899742126465 1998 -39.17679977416992 1999 9.5 2000 4.9087190628 2001 -23.6262550354 2002 25.6700000763 2003 117.9000015259 2004 56.2000007629 2005 6.1944751381 2006 9.6830582898 2007 14.307668956096098 2008 -73.0177436221 2009 36.6708546954 2010 43.9566745969145 2011 -16.1387949523351 2012 14.9173814328293 2013 11.4196168044771 2014 -15.415764109581 2015 -10.4512642921744 2016 14.5589545463737 2017 33.3797145300936 2018 -20.7065708731791 2019 12.1196259136503 2020 21.5418834618469 2021 19.1622486462061 2022 -11.4867349321899