Year	per 1,000 people
1980	2.84949994087219
1981	2.87509989738464
1990	2.6400001049
1992	3.0604999065
1996	2.6400001049
2000	2.38
2001	2.28
2002	2.19
2003	2.19
2004	2.19
2005	2.19
2006	1.88
2007	1.88
2008	1.86
2009	1.93
2010	1.93
2011	1.07
2012	1.07
2013	1.15
2015	1.1
2016	1.36
2017	1.38