Year	per 1,000 people
1990	11.64
1991	12.09
1992	11.58
1993	11.1
1994	11.5
1995	23.07
1996	11.44
1997	10.42
1998	10.3
1999	10.18
2000	10.07
2001	10.57
2002	9.954
2003	9.949
2004	10.21
2005	9.766
2007	10.2
2008	10.3
2009	10.79
2010	10.47
2011	10.9
2012	10.22
2013	12.01
2014	12.18
2015	12.26
2016	12.44
2017	16.05
2018	16.27
2019	17.3
2020	16.4
2021	14.82