1994

5.0

1983

6.2

1998

3.7

2016

5.2

1987

6.5

2016

7.0

2007

7.4

2004

6.1

1990

6.0

2008

6.7

2006

6.7

1972

6.5

2006

6.5

1974

6.7

2005

5.5

2007

5.0

2008

6.4

2008

6.2

1983

6.7

1984

7.2