Year annual % change 1996 -41.0999984741 1997 -78.7559967041 1998 34.3185005188 1999 42.2999992371 2000 -54.0934371948 2001 3.0288345814 2002 18.3400001526 2003 147.1799926758 2004 -6.4400000572 2005 3.7896365043 2006 6.1682397748 2007 39.397956796381514 2008 -50.5230769231 2009 72.7679149069 2010 52.13503699478947 2011 -4.73156178649364 2012 39.6126510634909 2013 -12.9035599697218 2014 15.5888783629639 2015 -22.7753013249378 2016 21.6414788677812 2017 25.785684906063 2018 -12.1489322101357 2019 11.91468015217 2020 -9.2720860511161 2021 1.97924170456489 2022 -1.0108857195724