Year annual % change 1998 -65.41999816894531 1999 42.29999923706055 2000 4.470635891 2001 -3.7152304649 2002 66.2600021362 2003 41.4799995422 2004 70.5 2005 22.8374017001 2006 30.3297191282 2007 -15.528549930435275 2008 -65.4991596639 2009 32.8901128749 2010 56.025149345984346 2011 -23.2867992669615 2012 24.5541734761774 2013 4.03294438504338 2014 -28.4631143963907 2015 6.10827026806273 2016 16.8337247978081 2017 29.2738591917292 2018 -17.3513111911956 2019 3.39651277082034 2020 13.831169140295 2021 44.9325756496131 2022 -22.7790975714609