2009

6.0

10.0

2000

6.6

2005

7.3

2002

5.4

1981

4.8

1975

7.2

2018

5.3

1991

7.2

2004

5.6

1970

5.5

1985

6.4

2003

6.1

1946

4.8

1933

6.0

2006

6.0

2002

5.4

1993

5.7

2002

4.5

2023

6.0