Year	per 1,000 people
1995	7.147
1996	7.374
1997	7.534
1998	7.469
1999	7.547
2000	7.615
2001	7.684
2002	8
2003	9.196
2004	9.369
2005	11.3
2006	11.27
2007	11.17
2008	11.45
2009	11.47
2010	11.41
2011	11.64
2012	12.3
2013	12.31
2014	12.32
2015	12.28
2016	12.08
2017	12.08