1998

6.8

2006

7.0

2004

7.1

1999

8.5

2016

4.5

2003

7.8

2004

6.8

2017

5.3

1997

7.1

1996

5.6

2024

0.0

1992

7.3

2008

6.4

1995

7.6

1988

7.7

2013

0.0

2017

6.9

2024

7.3

2006

6.0

1994

6.7