1992

5.0

1999

6.0

1995

6.7

2020

7.3

1988

5.9

2013

6.2

2009

6.3

1978

6.7

2020

7.0

2014

8.5

1963

6.9

2008

5.2

1978

6.9

2016

6.5

2008

6.0

2011

9.5

1996

5.6

1977

6.6

6.2

2014

5.7