2017

7.2

2011

8.5

2014

7.8

1994

8.4

1989

8.0

2008

8.9

2010

8.1

2016

8.6

2021

8.8

2019

8.7

2019

8.4

2005

8.1

2009

8.3

2013

8.6

2019

8.5

1993

8.4

2007

7.9

2016

8.4

2015

8.7

2015

8.1