Year modeled estimate, per 100,000 live births 2000 6 2001 5 2002 5 2003 5 2004 6 2005 6 2006 5 2007 5 2008 5 2009 4 2010 4 2011 4 2012 3 2013 3 2014 3 2015 2 2016 2 2017 2 2018 2 2019 2 2020 2