Year per 1,000 live births 1972 27.4 1973 27 1974 26.6 1975 26.3 1976 25.9 1977 25.6 1978 25.3 1979 25.1 1980 24.9 1981 24.6 1982 24.3 1983 24 1984 23.7 1985 23.5 1986 23.2 1987 22.9 1988 22.7 1989 22.6 1990 22.6 1991 22.9 1992 23.4 1993 23.9 1994 24.5 1995 24.9 1996 25.1 1997 25 1998 24.6 1999 24.2 2000 23.6 2001 22.9 2002 22.3 2003 21.3 2004 20.4 2005 19.4 2006 18.2 2007 16.8 2008 15.2 2009 13.5 2010 11.8 2011 10.1 2012 8.6 2013 7.3 2014 6.2 2015 5.5 2016 5 2017 4.8 2018 4.7 2019 4.7 2020 4.8 2021 4.8 2022 4.7