Year	per 1,000 people
1990	8.792
1991	7.108
1992	6.942
1993	6.96
1994	6.861
1995	6.848
1996	6.633
1997	6.475
1998	6.417
1999	6.332
2000	6.199
2001	6.126
2002	6.32
2003	6.431
2004	6.543
2005	6.581
2006	6.613
2007	6.702
2008	6.716
2009	6.448
2010	6.402
2011	6.527
2012	6.46
2013	5.963
2014	6.081
2015	6.355
2016	6.436
2017	6.537
2018	6.636
2019	6.601
2020	7.576
2021	11.18