2013

7.4

2021

8.2

2008

7.9

2016

8.0

2023

9.9

2006

7.2

2012

7.7

1990

6.9

2017

8.1

2012

8.6

2001

7.0

2005

7.0

1998

8.6

2018

8.4

1984

8.5

1994

8.3

2019

8.6

2020

8.5

1992

8.5

1999

8.4