Year Percent change 2001 11.662 2002 3.565 2003 0.3 2004 -1.055 2005 -1.394 2006 0.622 2007 4.358 2008 9.35 2009 -2.41 2010 3.481 2011 7.336 2012 2.477 2013 1.767 2014 0.429 2015 -0.537 2016 0.273 2017 1.488 2018 1.056 2019 2.243 2020 1.349 2021 1.77 2022 1.864 2023 2 2024 2