Year Deaths per 100,000 1990 0 1991 0 1992 0 1993 0 1994 0 1995 0 1996 0 1997 0 1998 0 1999 0.1 2000 0.1 2001 0.2 2002 0.3 2003 0.4 2004 0.5 2005 0.6 2006 0.6 2007 0.7