Year per 100,000 population 2000 20.78729531156605 2001 21.121862838059887 2002 21.301149164940643 2003 20.533475890042826 2004 20.114874318407228 2005 20.275507161087578 2006 20.14958636412592 2007 20.239012852210806 2008 19.93196487758615 2009 19.987471367476154 2010 19.890936721140324 2011 20.09368678326927 2012 19.663639552591942 2013 19.12054160714475 2014 18.412703693934898 2015 18.124321777564386 2016 17.947629040672602 2017 17.8850987757547 2018 17.697967910942893 2019 17.590084684890492