Year	per 1,000 population at risk
2000	2.1250994668808594
2001	1.6909830290867358
2002	1.4156436315756058
2003	1.2587776851117158
2004	1.197675859058045
2005	1.3379524172004462
2006	1.2086147307547297
2007	1.105962793986163
2008	0.7334476671274007
2009	0.7153914676019565
2010	0.8573581492114957
2011	0.6178096779694366
2012	0.6056076547064818
2013	0.5046681489722208
2014	0.36659265048693945
2015	0.37319713886392564
2016	0.35439049976713904
2017	0.4193325860849514
2018	0.4309837100504369
2019	0.40694310793854055
2020	0.37111527054187915
2022	0.3568978860031332