2008

8.9

1995

7.8

2011

7.6

2012

8.4

1997

8.0

2014

7.7

2010

7.9

2018

7.2

2015

6.7

2009

7.5

2004

7.9

2006

8.2

2017

7.5

2015

6.7

2014

8.3

2013

7.8

2021

7.2

2019

8.4

1987

8.4

1993

8.4