2009

5.7

2006

5.6

2010

6.7

1997

7.5

1998

6.2

2007

6.1

2024

9.6

2002

5.4

2010

7.5

2008

6.5

2005

5.9

2012

7.8

1970

7.3

2012

7.0

2002

5.8

2007

5.8

2000

7.4

2003

5.7

1998

6.3

2003

6.3