Year annual % change 1996 -19.2000007629 1997 -13.8247995377 1998 -30.349899292 1999 56.0999984741 2000 -17.2560253143 2001 -22.1349487305 2002 44.9199981689 2003 37.5999984741 2004 50.0999984741 2005 24.7863701502 2006 17.2047126877 2007 15.542894469444036 2008 -41.7082822953 2009 53.736430394 2010 32.08669775404236 2011 -17.4161791177776 2012 15.7488701987344 2013 -7.4468329215902 2014 3.86444515255844 2015 -26.6224993967534 2016 17.6169321671275 2017 30.6232329633351 2018 -25.893431476706 2019 8.55077220010119 2020 -7.02234534024606 2021 5.43978911924601 2022 -7.15453579845544