Year Deaths per 100,000 1990 1.5 1991 2 1992 2.5 1993 3.2 1994 3.9 1995 4.8 1996 5.7 1997 7 1998 8.5 1999 9.9 2000 11.7 2001 13.3 2002 15.2 2003 17 2004 18.5 2005 21.4 2006 21.9 2007 23.5