Year Percent change 1996 0 1998 20.067 1999 24.23 2000 26.251 2001 25.176 2002 -12.978 2003 30.805 2004 10.573 2005 -11.276 2006 -22.891 2007 36.756 2008 36.157 2009 64.716 2010 -9.16 2011 29.857 2012 26.556 2013 17.38 2014 6.143 2015 -8.85 2016 -1.472 2017 -25.321 2018 -22.286 2019 41.11 2020 13.399 2021 7.287 2022 6.626 2023 3.248 2024 5.414