Year	per 1000 people
1980	1.771
1982	1.843
1984	1.861
1985	1.879
1986	1.882
1987	2.004
1988	2.024
1989	2.063
1990	1.99
1991	2.079
1992	2.091
1993	2.03
1994	2.19
1995	2.121
1996	2.135
1997	2.147
1998	2.178
1999	2.135
2000	2.17
2001	2.194
2002	2.253
2005	2.4
2006	2.424
2008	2.473
2010	2.426
2011	2.487
2012	2.534
2013	2.623
2014	2.765
2015	2.82