Year	per 1,000 people
1990	6.713
1991	6.256
1992	6.324
1993	6.396
1994	6.695
1995	6.754
1996	6.602
1997	6.575
1998	6.479
1999	6.504
2000	7.405
2001	7.44
2002	7.604
2003	7.66
2004	7.705
2005	7.726
2006	7.86
2007	7.857
2008	7.704
2009	7.736
2010	7.684
2015	8.986
2016	8.553
2017	8.548
2018	8.527
2019	8.541
2020	6.245