Year Percent change 2000 5.3 2001 12.149 2002 14.16 2003 10.33 2004 3.555 2005 6.945 2006 9.514 2007 11.391 2008 17.49 2009 7.427 2010 7.291 2011 8.487 2012 6.832 2013 7.578 2014 9.858 2015 7.742 2016 8.844 2017 12.435 2018 23.429 2019 22.326 2020 20.5 2021 17.5 2022 24.5 2023 24 2024 13.5