2017

6.5

2018

7.2

2009

8.3

2015

7.5

2010

8.0

2013

8.6

2019

7.8

2020

8.3

2018

7.7

1976

7.0

2011

8.1

2014

7.9

2017

8.1

2017

8.1

1988

8.3

2012

8.4

2007

7.5

2019

7.6

2020

7.6

2009

8.3