Year Per 100 000 2000 4 2001 4.8 2002 2.4 2003 4.1 2004 3.4 2005 3.8 2006 4 2007 4.4 2008 5.1 2009 5.3 2010 6.3 2011 5.2 2012 6.4 2013 4.1 2014 3.9 2015 6.2 2016 5.6 2017 5.1 2018 4.9 2019 6.3 2020 5.7