Year	Number per 1,000 Live Births
1960-01-01	27.8
1961-01-01	26.9
1962-01-01	26
1963-01-01	25
1964-01-01	24.0
1965-01-01	23.1
1966-01-01	22.1
1967-01-01	21.2
1968-01-01	20.3
1969-01-01	19.4
1970-01-01	18.5
1971-01-01	17.6
1972-01-01	16.7
1973-01-01	15.9
1974-01-01	15
1975-01-01	14.2
1976-01-01	13.3
1977-01-01	12.5
1978-01-01	11.7
1979-01-01	11
1980-01-01	10.3
1981-01-01	9.7
1982-01-01	9.2
1983-01-01	8.7
1984-01-01	8.3
1985-01-01	8.0
1986-01-01	7.7
1987-01-01	7.5
1988-01-01	7.3
1989-01-01	7.0
1990-01-01	6.8
1991-01-01	6.6
1992-01-01	6.4
1993-01-01	6.2
1994-01-01	6.0
1995-01-01	5.8
1996-01-01	5.6
1997-01-01	5.5
1998-01-01	5.4
1999-01-01	5.3
2000-01-01	5.3
2001-01-01	5.2
2002-01-01	5.2
2003-01-01	5.2
2004-01-01	5.2
2005-01-01	5.2
2006-01-01	5.2
2007-01-01	5.1
2008-01-01	5.0
2009-01-01	5.0
2010-01-01	4.9
2011-01-01	4.8
2012-01-01	4.8
2013-01-01	4.8
2014-01-01	4.7
2015-01-01	4.7
2016-01-01	4.6
2017-01-01	4.5