Year	per 1,000 people
1999	3.3192
2000	3.24
2001	3.225
2002	3.203
2003	3.149
2004	3.151
2005	3.035
2006	3.169
2007	3.387
2008	3.367
2009	3.303
2010	3.356
2011	3.304
2012	3.363
2013	3.39
2014	3.427
2015	3.451
2016	3.473
2017	3.421
2018	3.521
2019	3.567
2020	3.67
2021	4.629