2006

6.5

2016

6.7

2002

9.1

2012

6.0

1970

6.3

1972

7.1

1984

7.2

1984

7.3

1960

7.7

1939

7.9

1958

6.6

1934

7.5

2004

7.0

1951

7.9

2001

7.0

1996

5.8

1958

8.2

1939

7.1

1941

6.4