1993

3.5

1998

6.0

2006

5.3

2004

5.5

1985

4.1

1988

6.6

2017

6.7

1997

0.0

2005

5.1

2014

9.0

2006

6.2

1987

4.5

1985

7.4

2002

6.0

2005

7.7

2008

7.6

1997

6.3

1984

7.2

2017

7.2

2019

0.0