Year national estimate, per 100,000 live births 1987 64 1991 39 1992 38 1993 138 2000 27 2001 28 2002 35 2003 38 2004 29 2005 30 2006 31 2007 28 2008 21 2009 26 2010 23 2011 23 2012 21 2013 19 2014 19 2015 15