Year	per 1,000 people
1996	4.734
1997	4.933
1998	4.988
1999	5.071
2000	4.808
2001	4.466
2002	4.471
2003	4.466
2004	4.412
2005	4.402
2006	4.254
2007	4.167
2008	4.204
2009	4.163
2010	4.22
2011	4.203
2012	3.976
2013	4.046
2014	4.085
2015	4.287
2016	4.26
2017	5.161
2018	5.018
2019	5.529
2020	6.013
2021	5.875