Year Percent change 2001 1.1 2002 1.9 2003 2.5 2004 4.4 2005 4.2 2006 8.6 2007 6.8 2008 7.2 2009 -5.8 2010 2.7 2011 3.2 2012 -2.724 2013 3.549 2014 1.784 2015 3.39 2016 2.949 2017 4.716 2018 4.501 2019 2.78 2020 2.52 2021 2.9 2022 3.2 2023 3.2 2024 2.9