Year	Number per 1,000 Live Births
1981-01-01	18.9
1982-01-01	18.1
1983-01-01	17.3
1984-01-01	16.5
1985-01-01	15.8
1986-01-01	15.1
1987-01-01	14.4
1988-01-01	13.8
1989-01-01	13.2
1990-01-01	12.6
1991-01-01	12.1
1992-01-01	11.5
1993-01-01	11.1
1994-01-01	10.6
1995-01-01	10.2
1996-01-01	9.7
1997-01-01	9.3
1998-01-01	8.9
1999-01-01	8.6
2000-01-01	8.2
2001-01-01	7.9
2002-01-01	7.6
2003-01-01	7.3
2004-01-01	7.1
2005-01-01	6.8
2006-01-01	6.6
2007-01-01	6.4
2008-01-01	6.1
2009-01-01	6.0
2010-01-01	5.8
2011-01-01	5.6
2012-01-01	5.5
2013-01-01	5.3
2014-01-01	5.1
2015-01-01	5.0
2016-01-01	4.8
2017-01-01	4.6