Year modeled estimate, per 100,000 live births 2000 10 2001 9 2002 10 2003 9 2004 8 2005 8 2006 7 2007 7 2008 7 2009 6 2010 5 2011 6 2012 5 2013 4 2014 4 2015 4 2016 3 2017 4 2018 4 2019 4 2020 3