Year per 100,000 population 2000 20.81189419886947 2001 21.136966820524933 2002 21.31646428473202 2003 20.564908486251827 2004 20.14777983889561 2005 20.305043954769456 2006 20.18825953489885 2007 20.282775987629016 2008 19.979473994643246 2009 20.03038024247787 2010 19.933675754553324 2011 20.136233879943916 2012 19.708863250563684 2013 19.171209198953846 2014 18.47554164883484 2015 18.190565765281875 2016 18.02327022394293 2017 17.95763018944087 2018 17.776335139544233 2019 17.67090878535655