Year Percent change 1996 8.736 1997 10.085 1998 6.832 1999 2.326 2000 3.977 2001 4.098 2002 0.656 2003 1.043 2004 2.71 2005 2.261 2006 1.72 2007 5.435 2008 3.666 2009 0.994 2010 2.298 2011 2.353 2012 2.403 2013 1.429 2014 0.101 2015 0 2016 2.01 2017 2.365 2018 2.051 2019 2.1 2020 2 2021 2 2022 2 2023 2 2024 2