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