1996

8.0

1980

6.0

1949

7.0

1975

6.5

2017

7.0

2003

7.3

1996

6.4

2021

6.5

2001

7.1

2007

6.1

2007

6.0

2006

7.8

2015

5.1

2005

7.5

2009

2.0

1965

6.8

1989

4.3

1987

7.7

1976

4.3

1995

7.6