1977

8.1

1994

7.0

2004

8.3

1969

6.7

2006

7.7

2014

8.3

2019

7.9

2017

7.7

1977

7.4

2011

7.6

2016

7.4

2018

7.2

2008

7.7

1998

7.2

2001

7.9

2006

7.4

2013

7.3

1999

8.2

2010

7.9

2019

7.3