Year Percent change 1994 1327.95 1995 1261.54 1996 445.756 1997 21.483 1998 19.826 1999 20.138 2000 7.372 2001 11.746 2002 7.805 2003 3.059 2004 9 2005 10.354 2006 7.098 2007 8.648 2008 8.936 2009 0.148 2010 4.773 2011 5.568 2012 7.832 2013 4.002 2014 4.418 2015 6.005 2016 6.168 2017 10.419 2018 8.888 2019 13 2020 9 2021 8 2022 6 2023 6 2024 6