2011

6.5

1972

7.3

2012

6.2

1969

6.8

1998

5.1

1990

7.7

2011

6.9

1945

8.1

2009

6.6

2021

7.8

7.8

2011

5.5

2006

6.3

1957

7.9

2007

4.5

2011

5.9

2005

6.1

2013

6.8

1994

7.1