1994

7.3

1995

6.8

1990

5.7

2005

7.8

2013

7.5

2017

6.4

2024

8.1

2021

6.7

1992

7.0

1989

7.2

1997

7.5

1984

8.0

1991

6.8

2014

8.2

1999

6.7

2019

6.6

2002

7.6

2002

5.4

2012

6.9

2009

6.2

2005

8.0

2013

6.1

1992

6.5

2005

7.5

2007

4.8

2016

7.6

1991

0.0