Year per 100,000 people 2000 39 2001 37 2002 35 2003 35 2004 32 2005 29 2006 26 2007 27 2008 23 2009 24 2010 21 2011 21 2012 18 2013 17 2014 23 2015 20 2016 22 2017 20 2018 19 2019 19 2020 18 2021 18 2022 17