Year Per 100 000 2000 7.3 2001 5.2 2002 5.9 2003 6.1 2004 7.5 2005 7.1 2006 6.4 2007 6.4 2008 6.1 2009 5.7 2010 4.7 2011 4.8 2012 5.5 2013 5.3 2014 5.2 2015 4.7 2016 4.4 2017 4.7 2018 4.4 2019 4.8 2020 4.5