Year modeled estimate, per 100,000 live births 2000 9 2001 8 2002 8 2003 8 2004 7 2005 7 2006 7 2007 6 2008 6 2009 6 2010 6 2011 5 2012 5 2013 5 2014 5 2015 5 2016 5 2017 5 2018 5 2019 4 2020 4