Year annual % change 1999 7.199999809265137 2001 -26.9948883057 2002 31.8199996948 2003 46.9799995422 2004 25.2000007629 2005 37.9563417388 2006 7.87977993 2007 67.006659361 2009 21.9758668191 2010 12.17768957951284 2011 -14.0903171560852 2012 -0.586383644808108 2013 14.8580986697777 2014 -3.58248537606407 2015 -12.7913350778235 2016 6.17930407041853 2017 -10.9398575524089 2018 -10.1723989693861 2019 -5.33674584316407 2020 -6.16465109599181 2021 15.9834237073121 2022 19.0738300244918