2014

7.3

2009

7.4

2016

7.5

2020

7.7

2024

9.1

2019

7.1

2013

8.6

2004

8.6

2016

7.5

1968

8.1

2011

8.5

2010

7.0

2015

8.3

1998

7.2

2012

8.4

1987

7.3

2014

5.8

2011

7.7

2001

6.9

2017

6.0