Year	per 1,000 people
1990	4.487
1993	4.791
1994	4.921
1995	4.359
1996	4.367
1997	4.39
1998	3.939
1999	3.968
2000	3.95
2001	3.803
2002	3.672
2003	3.633
2004	3.636
2005	3.672
2006	4.244
2007	4.283
2009	4.25
2010	4.066
2011	4.216
2012	4.453
2013	4.314
2016	3.656
2019	5.1
2020	5.831