2002

7.5

2005

7.0

1974

6.9

2005

8.2

2011

8.3

1997

8.3

2011

7.6

2001

7.8

1991

7.6

1999

8.4

2004

8.3

2010

8.5

1998

7.2

2010

6.7

2016

7.3

2012

6.8

2008

7.7

2016

6.9

2001

8.6

2006

7.3