Year % 1995 25.83 1996 18.2 1997 20.21 1998 15.32 1999 18.44 2000 10.04 2001 10.44 2002 9.88 2004 8.83 2005 5.36 2006 1.48 2007 1.7 2008 1.49 2009 0.35 2010 0.33 2011 0.17 2012 0.29 2013 0.3 2014 0.27 2015 0.31 2016 0.4 2017 0.83 2018 0.59 2019 1.34 2020 0.98 2021 2.1