Year % 1995 2.94 1996 10.35 1997 10.35 1998 10.35 1999 6.68 2001 10.64 2002 10.77 2003 10.9 2004 10.96 2005 10.41 2006 8.31 2007 8.44 2008 8.44 2009 8.46 2010 8.46 2011 7.78 2012 7.43 2013 7.43 2014 7.43 2015 6.22 2016 6.22 2017 10.04 2018 9.42 2019 7.23 2020 9.24 2021 7.88