2004

7.5

2015

7.1

2018

6.6

2004

7.3

2010

8.2

2009

7.7

2011

7.8

1966

8.0

2012

6.8

1998

7.6

2020

7.4

2007

6.2

2015

7.5

2002

8.4

2008

7.6

2003

7.5

2004

8.1

2011

7.3

1979

7.4

2004

8.6