Year	Number per 1,000 Live Births
1960-01-01	22.0
1961-01-01	20.6
1962-01-01	19.5
1963-01-01	18.4
1964-01-01	17.4
1965-01-01	16.6
1966-01-01	15.8
1967-01-01	15.1
1968-01-01	14.4
1969-01-01	13.8
1970-01-01	13.2
1971-01-01	12.6
1972-01-01	12
1973-01-01	11.4
1974-01-01	10.7
1975-01-01	10.1
1976-01-01	9.4
1977-01-01	8.7
1978-01-01	8.1
1979-01-01	7.6
1980-01-01	7.1
1981-01-01	6.8
1982-01-01	6.5
1983-01-01	6.3
1984-01-01	6.1
1985-01-01	6.0
1986-01-01	6.0
1987-01-01	5.9
1988-01-01	5.8
1989-01-01	5.7
1990-01-01	5.5
1991-01-01	5.3
1992-01-01	5.0
1993-01-01	4.7
1994-01-01	4.5
1995-01-01	4.3
1996-01-01	4.1
1997-01-01	3.9
1998-01-01	3.7
1999-01-01	3.6
2000-01-01	3.5
2001-01-01	3.4
2002-01-01	3.3
2003-01-01	3.3
2004-01-01	3.2
2005-01-01	3.1
2006-01-01	3.0
2007-01-01	2.8
2008-01-01	2.7
2009-01-01	2.6
2010-01-01	2.5
2011-01-01	2.4
2012-01-01	2.3
2013-01-01	2.2
2014-01-01	2.1
2015-01-01	2.0
2016-01-01	1.9
2017-01-01	1.9