Year	per 1,000 uninfected population
1990	0.5055573807977158
1991	0.8747021340769782
1992	1.408295257601612
1993	1.9970427861914617
1994	2.3804849613954002
1995	2.5074682201567406
1996	2.4305067911429896
1997	2.3459073579778074
1998	2.1984614327647862
1999	2.141594801292122
2000	2.078178841656084
2001	2.1010947807942535
2002	2.0360391413199235
2003	1.9921412582077478
2004	1.9677530865805513
2005	1.866274652698599
2006	1.7703583393331708
2007	1.6992128372149422
2008	1.6588359295145612