Year	Number per 1,000 Live Births
1960-01-01	17.5
1961-01-01	17.2
1962-01-01	16.9
1963-01-01	16.5
1964-01-01	16
1965-01-01	15.5
1966-01-01	15
1967-01-01	14.4
1968-01-01	13.9
1969-01-01	13.3
1970-01-01	12.8
1971-01-01	12.3
1972-01-01	11.9
1973-01-01	11.4
1974-01-01	10.9
1975-01-01	10.4
1976-01-01	9.9
1977-01-01	9.3
1978-01-01	8.8
1979-01-01	8.2
1980-01-01	7.8
1981-01-01	7.3
1982-01-01	6.9
1983-01-01	6.5
1984-01-01	6.2
1985-01-01	6.0
1986-01-01	5.7
1987-01-01	5.5
1988-01-01	5.3
1989-01-01	5.1
1990-01-01	5.0
1991-01-01	4.8
1992-01-01	4.6
1993-01-01	4.4
1994-01-01	4.3
1995-01-01	4.1
1996-01-01	3.9
1997-01-01	3.7
1998-01-01	3.6
1999-01-01	3.4
2000-01-01	3.2
2001-01-01	3.0
2002-01-01	2.9
2003-01-01	2.7
2004-01-01	2.6
2005-01-01	2.5
2006-01-01	2.4
2007-01-01	2.3
2008-01-01	2.2
2009-01-01	2.1
2010-01-01	2.0
2011-01-01	2.0
2012-01-01	1.9
2013-01-01	1.8
2014-01-01	1.8
2015-01-01	1.7
2016-01-01	1.7
2017-01-01	1.6