2005

7.3

2019

8.7

2011

8.5

2008

8.9

2008

8.4

2006

8.6

2007

7.9

2016

8.6

2004

7.9

2001

8.6

2016

8.0

2010

8.1

2013

8.2

1987

8.4

1993

8.4

2021

7.9

2013

8.2

1990

8.0

2014

8.5

1989

8.3