2014

6.0

2005

4.7

2009

6.8

1999

6.7

1974

7.1

1920

7.9

2013

7.0

1954

8.4

2002

9.1

1972

7.1

1985

6.5

1965

7.4

2000

6.5

2002

4.0

2010

5.9

2001

6.1

1972

6.4

1962

7.7

2014

7.8

1931

8.1