2003

8.2

2015

8.3

2012

8.1

1978

6.8

2019

7.8

2014

7.3

2004

7.4

2017

7.3

2004

7.2

1998

7.2

2002

7.3

2010

7.7

2013

8.1

1993

6.6

2013

7.5

2006

7.5

2009

7.6

2018

7.9

5.8

1995

7.8