1993

7.0

2010

8.0

1960

4.1

2007

7.5

1986

5.5

1987

6.1

1984

6.7

2002

8.0

1967

6.7

1984

6.2

1999

9.5

1957

5.0

1974

7.5

1984

8.1

1985

6.7

1980

7.3

1989

8.2

2018

0.0

1959

5.6

2016

6.5