Year	Number per 1,000 Live Births
1960-01-01	35.6
1961-01-01	32.9
1962-01-01	30.9
1963-01-01	29.3
1964-01-01	28.3
1965-01-01	27.3
1966-01-01	26.3
1967-01-01	25.2
1968-01-01	24.1
1969-01-01	23
1970-01-01	22
1971-01-01	20.9
1972-01-01	19.6
1973-01-01	17.8
1974-01-01	15.9
1975-01-01	14.3
1976-01-01	13.1
1977-01-01	12.5
1978-01-01	12.3
1979-01-01	12.2
1980-01-01	12.0
1981-01-01	11.4
1982-01-01	10.7
1983-01-01	10
1984-01-01	9.4
1985-01-01	8.8
1986-01-01	8.4
1987-01-01	7.9
1988-01-01	7.3
1989-01-01	6.7
1990-01-01	6.2
1991-01-01	5.5
1992-01-01	5.0
1993-01-01	4.6
1994-01-01	4.2
1995-01-01	3.9
1996-01-01	3.8
1997-01-01	3.6
1998-01-01	3.4
1999-01-01	3.2
2000-01-01	3.0
2001-01-01	2.8
2002-01-01	2.7
2003-01-01	2.5
2004-01-01	2.3
2005-01-01	2.3
2006-01-01	2.3
2007-01-01	2.3
2008-01-01	2.2
2009-01-01	2.2
2010-01-01	2.2
2011-01-01	2.2
2012-01-01	2.2
2013-01-01	2.1
2014-01-01	2.1
2015-01-01	2.1
2016-01-01	2.2
2017-01-01	2.2