Year Deaths per 100,000 1990 0.1 1991 0.1 1992 0.2 1993 0.2 1994 0.3 1995 0.3 1996 0.3 1997 0.6 1998 0.7 1999 0.9 2000 1 2001 1.1 2002 1.3 2003 1.4 2004 1.5 2005 1.5 2006 1.3 2007 1.4