2001

6.6

2004

8.3

2004

8.6

1998

7.2

1992

5.8

2003

8.2

1993

6.7

2017

7.3

2014

7.0

2018

7.0

2020

6.0

2006

10.0

1989

8.5

8.0

2012

6.8

2017

4.0

2012

7.5

2001

7.4

2016

6.5

5.5