Year Percent change 2001 4.635 2002 0.024 2003 5.787 2004 2.151 2005 3.918 2006 6.12 2007 0.479 2008 12.339 2009 -4.025 2010 -1.751 2011 1.733 2012 1.34 2013 3.103 2014 0.383 2015 4.014 2016 2.623 2017 4.364 2018 3.974 2019 3.388 2020 3.53 2021 3.223 2022 2.976 2023 2.787 2024 2