Year Years 1990 -0.155 1991 1.175 1992 0.8243 1993 0.981 1994 1.318 1995 3.219 1996 4.201 1997 4.585 1998 2.838 1999 1.512 2000 0.8962 2001 1.003 2002 1.029 2003 1.05