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