Year % 1995 4.57 1996 13.02 1997 12.72 1998 12.64 1999 12.66 2000 12.7 2001 13.72 2002 13.24 2003 13.24 2004 12.52 2005 13.31 2006 13.16 2007 12.86 2008 11.88 2009 11.71 2010 11.66 2011 11.45 2012 11.48 2013 11.14 2014 11.06 2015 5.76 2016 5.76 2017 5.75 2018 5.75 2019 5.75 2020 5.75 2021 5.75