Year	Number per 1,000 Live Births
1960-01-01	23.7
1961-01-01	22.4
1962-01-01	21.3
1963-01-01	20.3
1964-01-01	19.3
1965-01-01	18.5
1966-01-01	17.7
1967-01-01	17.1
1968-01-01	16.4
1969-01-01	15.8
1970-01-01	15.1
1971-01-01	14.3
1972-01-01	13.7
1973-01-01	13.2
1974-01-01	12.7
1975-01-01	12.3
1976-01-01	11.9
1977-01-01	11.5
1978-01-01	11
1979-01-01	10.6
1980-01-01	10.2
1981-01-01	9.8
1982-01-01	9.5
1983-01-01	9.1
1984-01-01	8.8
1985-01-01	8.5
1986-01-01	8.3
1987-01-01	8.1
1988-01-01	7.9
1989-01-01	7.7
1990-01-01	7.4
1991-01-01	7.1
1992-01-01	6.7
1993-01-01	6.2
1994-01-01	5.8
1995-01-01	5.4
1996-01-01	5.0
1997-01-01	4.8
1998-01-01	4.6
1999-01-01	4.5
2000-01-01	4.4
2001-01-01	4.3
2002-01-01	4.2
2003-01-01	4.0
2004-01-01	3.9
2005-01-01	3.8
2006-01-01	3.7
2007-01-01	3.6
2008-01-01	3.6
2009-01-01	3.5
2010-01-01	3.5
2011-01-01	3.5
2012-01-01	3.4
2013-01-01	3.4
2014-01-01	3.4
2015-01-01	3.5
2016-01-01	3.5
2017-01-01	3.5