Year per 100,000 people 2000 36 2001 32 2002 30 2003 29 2004 27 2005 24 2006 23 2007 22 2008 22 2009 21 2010 20 2011 20 2012 19 2013 18 2014 18 2015 17 2016 16 2017 15 2018 14 2019 13 2020 12 2021 11 2022 9.5