Year	per 1,000 people
1994	1.092
1995	1.139
1996	1.195
1997	2.735
1998	2.777
1999	2.922
2000	2.998
2001	3.403
2002	3.637
2003	3.596
2004	3.855
2005	3.896
2006	4.039
2007	4.206
2008	4.41
2009	4.548
2010	4.708
2011	4.805
2012	4.904
2013	5.252
2014	5.615
2015	5.964
2016	6.979
2017	7.091
2018	7.39
2019	8.087
2020	8.53