Year % 1995 9.8 1996 11.02 1997 8.67 1998 7.87 1999 14.53 2000 6.08 2001 7.58 2002 6.92 2003 6.34 2004 6.44 2005 5.39 2006 4.84 2007 6.18 2008 6.22 2009 6.62 2010 6.24 2011 6.04 2012 6.1 2013 6.3 2014 6.75 2015 7.69 2016 8.06 2017 8.93 2018 8.25 2019 7.89 2020 8.82 2021 8.59