Year per 100,000 female population 2000 5.3 2001 5.4 2002 5.5 2003 5.6 2004 5.6 2005 5.6 2006 5.7 2007 5.6 2008 5.4 2009 5.2 2010 5.1 2011 5.1 2012 5 2013 4.9 2014 4.8 2015 4.6 2016 4.3 2017 4 2018 3.9 2019 3.9