Year Percent change 2001 -18.196 2002 -0.96 2003 -14.015 2004 9.93 2005 -8.989 2006 -3.816 2007 -10.677 2008 -4.962 2009 -3.738 2010 -3.126 2011 -0.116 2012 11.933 2013 2.56 2014 20.397 2015 14.635 2016 3.623 2017 0.784 2018 -5.46 2019 3.944 2020 2.265 2021 5.039 2022 2.613 2023 3.747 2024 4.24