2014

6.9

2022

4.5

2007

6.5

1934

7.0

2001

6.4

1999

6.9

1996

4.5

2001

5.7

1991

7.7

1967

5.9

2006

5.8

1957

4.4

2013

5.5

2004

5.6

2002

7.4

2002

6.8

2000

7.1

2004

6.2

1970

7.1

2005

6.7