2005

5.5

2009

5.6

2002

6.1

1928

7.3

2008

7.8

1967

6.6

1992

6.7

1981

5.8

2015

5.5

2012

5.5

2015

5.5

1957

8.1

2005

6.3

2010

5.2

2004

5.9

2009

5.7

1990

7.5

1999

6.8

1988

7.8

2002

6.7