1997

7.1

1984

7.5

1961

7.6

2006

7.5

1964

7.4

1974

6.4

2004

7.5

1953

7.3

2000

6.2

2000

6.7

1983

7.2

0.0

2007

6.8

2000

6.0

2023

5.7

2016

3.6

2006

5.1

2004

7.1

1996

4.8

1981

6.2