1998

9.0

2014

8.1

2003

7.7

1990

7.1

2006

7.8

2000

6.9

1985

7.8

2001

7.6

2010

7.4

2022

7.0

1993

7.2

2011

7.2

2008

7.5

2009

7.4

2020

7.4

1984

7.7

1993

8.0

1990

6.9

2017

7.5

2016

8.6