1995

6.0

1981

6.3

2006

7.0

1992

6.6

2013

4.7

1996

5.9

2020

5.0

1980

6.0

2000

5.2

2004

7.1

2007

6.3

1986

6.1

2003

6.2

1977

6.0

2016

6.1

1992

3.3

1994

6.2

2014

0.0

1936

5.0

1999

6.3