1968

7.0

1986

6.3

1986

6.7

1986

7.0

1981

7.0

1992

7.3

1983

6.6

1977

9.2

1995

4.1

1993

5.7

1995

0.0

1984

6.0

1994

6.4

1987

6.3

1985

5.9

1996

5.0

1993

6.8

1987

7.2

1988

1.0

1992

6.6

1995

7.4

1974

4.9

2001

5.3