Year Per 100 000 2000 13 2001 11 2002 8.6 2003 8.3 2004 7.6 2005 8.4 2006 7.2 2007 7.5 2008 6.9 2009 6.1 2010 6.9 2011 7.4 2012 7 2013 6.7 2014 5.9 2015 6.5 2016 5.9 2017 5.1 2018 5.4 2019 5.2 2020 4.9