Year per 100,000 people 2000 18 2001 18 2002 17 2003 32 2004 30 2005 31 2006 32 2007 30 2008 28 2009 27 2010 23 2011 34 2012 29 2013 6.8 2014 3.3 2015 6.3 2016 6 2017 12 2018 5.5 2019 11 2020 5 2021 0 2022 0.14