Year per 100,000 female population 2000 5.3 2001 4.7 2002 4.1 2003 3.7 2004 3.4 2005 3.1 2006 3.5 2007 3.8 2008 3.8 2009 4 2010 4 2011 3.3 2012 2.8 2013 2.4 2014 2.2 2015 2.2 2016 2.1 2017 2 2018 1.8 2019 1.7