1976

5.0

1989

6.1

1986

6.0

1989

5.5

1985

6.4

1991

5.2

2001

6.2

1979

6.8

1994

8.4

1986

5.5

1999

7.4

1984

8.1

1988

0.0

1994

5.3

1988

0.0

2003

7.5

1981

0.0

1994

6.0