Year	per 1,000 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	2.07
1991	2.088
1992	2.094
1993	2.028
1994	2.187
1995	2.117
1996	2.135
1997	2.229
1998	2.18
1999	2.123
2000	2.156
2001	2.182
2002	2.238
2003	2.254
2004	2.298
2005	2.34
2006	2.354
2007	2.379
2008	2.386
2009	2.403
2010	2.42
2011	2.479
2012	2.526
2013	2.613
2014	2.753
2015	2.802
2016	2.978
2017	3.054
2018	3.13
2019	3.224
2020	3.279