1966

6.0

2004

6.2

1971

8.2

1990

7.3

2014

7.1

1995

8.0

2011

6.7

1994

8.0

2001

7.9

1972

7.9

2010

7.1

1941

8.0

1963

6.8

2006

7.2

1960

8.2

1965

7.4

1963

7.7

2012

7.7

1986

5.9

1929

7.4