2007

7.5

2016

7.2

2001

7.6

1990

7.4

2001

8.1

2009

8.0

1995

7.8

2003

8.0

2017

7.6

2017

7.1

1973

6.8

2012

6.6

2022

6.0

1998

8.7

2005

7.0

2014

8.4

2011

7.6

1989

8.3

2011

7.2

2015

8.2