Year	per 1,000 population at risk
2000	13.8427946646677
2001	13.5712010194329
2002	11.410411340203
2003	6.40476325214031
2004	6.07305228607885
2005	5.37060449919523
2006	4.99256867375346
2007	3.7353373245831
2008	5.4863176425191
2009	5.27603731057653
2010	4.5215977240537
2011	3.38711542662321
2012	3.08662787169338
2013	0.852834596546186
2014	0.486825489398476
2015	0.194728960622103
2016	0.210934328055217
2017	0.0664565077339738
2018	0
2019	0
2020	0
2021	0
2022	0