Year % 1993 24.10856 1995 9.361765 1997 12.23515 1998 11.3002 1999 11.51156 2000 11.75477 2001 10.9787 2002 11.34544 2003 11.42064 2004 10.84973 2005 11.0543 2006 9.960875 2007 10.26674 2008 9.646162 2009 9.025331 2010 9.399102 2011 0 2013 0 2014 0 2015 0 2017 0 2018 0 2019 0 2020 0 2021 0