Year Deaths per 100,000 1990 0 1991 0 1992 0 1993 0.1 1994 0.1 1995 0.1 1996 0.1 1997 0.1 1998 0.2 1999 0.3 2000 0.3 2001 0.4 2002 0.6 2003 0.7 2004 0.9 2005 1.1 2006 1.4 2007 1.7