Year	per 1,000 people
1990	0.742
1991	0.807
1992	0.873
1993	1.036
1994	0.969
1995	1.089
1996	0.76
1997	0.749
1998	0.788
1999	0.753
2000	1.192
2001	0.835
2002	1.06
2004	1.705
2005	1.399
2006	1.657
2007	2.026
2008	1.482
2009	1.528
2010	1.711
2011	1.783
2012	1.79
2013	1.799
2014	1.873
2015	1.921
2016	1.911
2017	1.962
2018	2.145
2019	2.226
2020	2.461
2021	2.439