1987

8.1

1953

8.2

1982

6.5

1968

7.6

1979

7.1

1990

8.5

1960

7.7

1982

7.6

1961

8.1

1990

6.1

2006

7.4

2008

6.5

2004

6.1

1995

8.1

1944

6.9

1990

7.2

1975

7.5

1967

5.5

1994

8.0