Year Percent change 2003 0.493 2004 -3.729 2005 0.714 2006 1.113 2007 10.511 2008 0.453 2009 0.09 2010 6.577 2011 3.55 2012 3.673 2013 0.508 2014 -0.441 2015 -0.134 2016 1.295 2017 0.496 2018 2.893 2019 0.585 2020 2.389 2021 1.515 2022 2 2023 0.36 2024 0.36