Year	Years
1982	0.3495
1983	0.444
1984	1.294
1985	0.4093
1986	0.9381
1987	0.6568
1988	0.9227
1989	1.377
1990	1.615
1991	1.907
1992	1.905
1993	1.939
1994	1.695
1995	1.538
1996	1.887
1997	2.058
1998	1.635
1999	1.516
2000	1.589
2001	2.112
2002	2.425
2003	2.527