Year	Per 100 People
1998	0.25619
1999	0.98769
2000	2.5072
2001	4.49103
2002	6.91516
2003	9.5661
2004	12.76838
2005	17.33353
2006	20.22571
2007	23.85401
2008	25.42406
2009	26.13465
2010	27.38518
2011	28.39306
2012	29.52555
2013	30.4345
2014	30.78509
2015	31.94832
2016	33.0024
2017	33.85261