Year Per 100 People 1990 15.15 1991 16.22 1992 18.59 1993 20.92 1994 24.19 1995 27.75 1996 29.18 1997 33.17 1998 37.06 1999 42.45 2000 47.19 2001 51.83 2002 56.89 2003 60.83