1987

8.1

1915

6.0

1968

7.3

1979

8.3

1930

7.8

2001

6.9

2001

6.8

2010

6.8

1993

7.2

1939

7.0

1995

6.6

1979

7.3

1993

6.9

1999

6.8

1981

7.1

2002

6.6

2002

6.2

1998

6.8

2017

6.3

1980

6.5