2006

6.8

2014

6.3

1925

7.6

2012

5.0

2017

7.3

2009

8.0

1985

6.8

1971

6.8

1969

5.1

1896

7.1

1903

7.0

1977

7.4

1955

6.3

1988

6.5

1947

6.2

2003

7.3

1972

6.4

1988

6.7

1991

6.5

2011

9.7