Year annual % change 1996 99.9000015259 1997 59.9593009949 1998 -10.8350000381 1999 15.1999998093 2000 -28.2285251617 2001 -10.2874631882 2002 34.5800018311 2003 28.5699996948 2004 93.6900024414 2005 16.0887576509 2006 31.3717016311 2007 13.075925334135372 2008 -62.5355343873 2009 72.9689789593 2010 -10.750656358107902 2011 -35.2892576768672 2012 18.7316485041236 2013 0.188237588221996 2014 -28.6599026139915 2015 28.7887068494834 2016 32.8225446741065 2017 34.2926950665213 2018 -8.46849712785215 2019 13.8009356066128 2020 -12.3304619266265 2021 9.82587430649402 2022 -33.4646318248027