Year Percent change 2001 10.126 2002 -0.408 2003 -9.942 2004 -5.148 2005 2.758 2006 -16.253 2007 2.392 2008 10.097 2009 3.644 2010 8.416 2011 11.136 2012 -0.255 2013 -12.535 2014 2.127 2015 1.715 2016 -8.913 2017 0.28 2018 23.53 2019 -19.892 2020 12.723 2021 3.5 2022 3.5 2023 3.5 2024 3.5