Year	Number per 1,000 Live Births
1960-01-01	21.7
1961-01-01	21.2
1962-01-01	20.8
1963-01-01	20.1
1964-01-01	19.3
1965-01-01	18.4
1966-01-01	17.6
1967-01-01	16.9
1968-01-01	16.3
1969-01-01	15.6
1970-01-01	15
1971-01-01	14.3
1972-01-01	13.6
1973-01-01	12.8
1974-01-01	12
1975-01-01	11.2
1976-01-01	10.4
1977-01-01	9.8
1978-01-01	9.2
1979-01-01	8.8
1980-01-01	8.4
1981-01-01	8.0
1982-01-01	7.8
1983-01-01	7.6
1984-01-01	7.4
1985-01-01	7.3
1986-01-01	7.2
1987-01-01	7.1
1988-01-01	7.0
1989-01-01	6.8
1990-01-01	6.6
1991-01-01	6.4
1992-01-01	6.1
1993-01-01	5.8
1994-01-01	5.5
1995-01-01	5.2
1996-01-01	5.0
1997-01-01	4.9
1998-01-01	4.8
1999-01-01	4.7
2000-01-01	4.7
2001-01-01	4.6
2002-01-01	4.6
2003-01-01	4.5
2004-01-01	4.4
2005-01-01	4.3
2006-01-01	4.2
2007-01-01	4.1
2008-01-01	4.0
2009-01-01	4.0
2010-01-01	3.9
2011-01-01	3.9
2012-01-01	3.9
2013-01-01	3.8
2014-01-01	3.8
2015-01-01	3.8
2016-01-01	3.8
2017-01-01	3.7