1994

8.5

1954

8.0

2005

7.4

2000

7.4

1943

7.7

1968

6.8

1999

7.5

1999

5.2

2023

5.7

1981

6.5

1996

6.7

2007

6.7

2007

7.2

2006

5.2

2006

6.4

2002

6.4

2001

5.0

1999

6.1

2008

5.5

1991

6.7