Year % 1995 0 1996 0 1997 0 1998 0 1999 0 2000 0 2001 0 2002 12.52 2003 12.36 2004 12.07 2005 12.52 2006 12.27 2007 11.75 2008 10.84 2009 10.85 2010 11.13 2011 11.6 2012 12.47 2013 12.45 2014 12.39 2015 0 2016 0 2017 0 2018 0 2019 0 2020 0 2021 0