1996

6.2

2006

4.9

2002

6.8

1916

7.1

2005

6.7

1969

6.2

2007

6.0

1966

6.4

1963

7.6

2004

6.5

2007

7.6

2008

6.6

2006

7.0

2023

5.6

1994

4.3

2008

4.5

1998

2.0

2023

6.7

2006

6.2

2006

7.1