Year per 100,000 population 2000 1.9 2001 0.4 2002 3.2 2003 2.4 2004 4.6 2005 3.1 2006 5.1 2007 2 2008 2.4 2009 0.7 2010 0.9 2011 1.7 2012 1.7 2013 1.2 2014 0.6 2015 0.7 2016 1 2017 0.6 2018 0.3 2019 0.7