Year Percent change 2001 -9.157 2002 1.242 2003 4.555 2004 -1.176 2005 5.986 2006 18.433 2007 8.13 2008 19.529 2009 0.303 2010 7.634 2011 -0.511 2012 5.123 2013 0.07 2014 0.35 2015 18.034 2016 1.409 2017 -0.128 2018 0.54 2019 1.85 2020 1.87 2021 1.67 2022 1.65 2023 1.61 2024 1.6