2004

8.3

1990

6.9

1996

5.4

2001

6.6

2006

7.9

2004

8.6

2010

7.3

1993

6.6

2011

8.1

2012

5.6

2017

6.4

2005

8.1

2014

7.3

1996

6.0

2001

7.4

2019

7.8

1998

8.2

2020

6.6

2012

8.4