2004

8.6

1993

6.7

2004

8.3

2001

6.6

2006

7.9

1998

7.2

2011

7.8

2003

7.3

2014

7.2

2012

8.4

2005

6.2

1984

6.9

2016

6.4

2019

8.3

5.8

1972

7.7

2020

6.7

2010

7.6

2023

7.2

2015

8.0