Year modeled estimate, per 100,000 live births 2000 25 2001 22 2002 20 2003 19 2004 15 2005 13 2006 11 2007 11 2008 10 2009 9 2010 8 2011 8 2012 8 2013 7 2014 7 2015 6 2016 6 2017 6 2018 5 2019 5 2020 5