2007

6.7

1998

6.6

2005

6.2

1981

6.4

1956

5.6

1940

7.1

1981

7.1

1985

6.4

1966

7.5

2007

6.4

1974

7.2

1949

6.5

1999

7.7

1970

6.9

2002

6.6

2007

6.7

2008

5.8

2004

6.2

1973

6.0

2021

7.0