Year	per 1,000 people
1998	7.422
1999	7.261
2000	7.454
2001	7.267
2002	7.135
2003	6.804
2004	6.651
2005	6.331
2006	6.345
2007	6.638
2008	6.604
2009	6.398
2010	6.415
2011	6.271
2012	6.146
2013	6.077
2014	6.082
2015	6.022
2016	6.079
2017	5.969
2018	6.023
2019	6.058
2020	6.117
2021	7.85