Year per 100,000 people 1990 6.64766542299926 1991 5.68717298755322 1992 9.55049025849994 1993 6.2411258991122 1994 6.1224802167358 2006 2.41364433140544 2007 2.35509539608289 2008 8.0458151703845 2009 2.80697026857092 2010 3.29419644940526 2011 3.22503487068954