1987

7.1

1989

2.0

1994

7.8

1991

6.2

1983

0.0

1985

8.0

1982

7.3

2002

6.1

1989

6.3

1986

5.8

1994

7.4

1990

6.0

1983

6.0

1986

5.2

1992

6.0

1984

4.5