1987

7.1

1995

7.5

1984

7.6

2000

7.1

2004

8.2

1997

7.2

1989

6.4

1997

6.1

1996

6.6

1993

0.0

1993

0.0

1992

7.4

2010

0.0

2002

5.5

2004

5.8

2003

5.8

2010

8.1

2018

6.5

1991

3.5

1980

0.0

2006

7.9

2009

5.9

1999

7.8

1991

6.2

2001

8.2

2008

6.1

2005

8.3

2016

6.3

2011

6.0

2021

5.9

2006

5.9

2014

7.8

1994

6.2

1996

7.1

2002

7.2

2020

6.8

2002

0.0

1988

5.3

2023

6.5

2013

7.4

1991

7.0