Year annual % change 1996 -0.200000003 1997 12.5324001312 1998 -39.3125991821 1999 19.7000007629 2000 -28.0569725037 2001 14.1696214676 2002 33.5200004578 2003 88.0500030518 2004 -0.6999999881 2005 29.7962158715 2006 82.5260891946 2007 66.38293508358117 2008 -41.1296535996 2009 79.2925832468 2010 51.2581349939387 2011 -21.3099568172178 2012 17.39275097494 2013 -28.0456176102994 2014 -1.17364615598849 2015 -34.407584714833 2016 52.3094381084295 2017 31.5954538947688 2018 -1.72399400671145 2019 2.1519840356216 2020 -12.4696363337837 2021 -18.3994078964281 2022 3.64290125310101