1985

5.3

1998

6.0

2001

1.0

1987

3.7

1987

0.5

1981

6.3

1987

7.3

1994

6.5

1993

6.4

1991

6.1

1982

5.8

2001

4.7

1985

5.9

1989

5.0

1995

7.1

1986

5.1

1997

5.0

1984

6.7

1983

5.0