1979

9.8

1961

7.2

1985

6.2

2005

6.8

1959

6.1

2007

7.4

1967

7.7

2023

7.2

1988

5.6

2002

7.1

2007

6.7

1933

6.9

1935

7.3

1942

7.1

1954

7.1

1994

7.3

1951

7.0

2005

9.0

2006

7.0

1953

4.0