Year Percent change 2001 6.068 2002 3.1 2003 -1.669 2004 5.689 2005 4.82 2006 -2.9 2007 1.39 2008 -5.269 2009 -6.043 2010 0.269 2011 5.532 2012 4.806 2013 -1.714 2014 3.03 2015 10.38 2016 0.486 2017 -3.691 2018 0.42 2019 2 2020 2.5 2021 2.2 2022 2 2023 2 2024 2