Year	per 1000 people
1985	2.527
1986	2.556
1987	2.582
1988	2.697
1989	2.678
1990	2.551
1991	2.614
1992	2.266
1993	2.177
1994	2.254
1995	2.136
1996	2.086
1997	2.023
1998	2.088
1999	2.127
2000	2.182
2001	2.134
2002	2.047
2003	1.942
2004	1.95
2005	1.95
2006	1.909
2007	1.886
2008	1.917
2010	1.685
2011	1.708
2012	1.715
2013	1.698
2014	1.714