Year	per 1,000 uninfected population
1990	13.55
1991	18.28
1992	22.44
1993	25.2
1994	26.2
1995	25.64
1996	24.23
1997	22.44
1998	20.69
1999	19.09
2000	17.5
2001	16.05
2002	14.7
2003	13.37
2004	12.05
2005	10.43
2006	9.39
2007	8.85
2008	8.24
2009	7.56
2010	7.35
2011	7.32
2012	6.45
2013	5.9
2014	5.75
2015	5.35
2016	4.77
2017	4.14
2018	3.43
2019	2.77
2020	2.47
2021	2.18
2022	1.92