Year Per 100,000 People 1987 3.1794 1988 2.8313 1989 3.6103 1992 2.3358 1993 3.331 1994 2.6788 1995 3.6596 1996 3.6563 1997 8.1964 1998 6.6518 1999 6.1377 2000 2.6503 2001 5.7935 2002 6.4158 2003 4.7841 2004 5.972 2007 5.2267 2008 6.8024 2010 3.8636