2012

6.1

1963

7.0

2005

6.2

2005

5.8

2015

6.6

1999

6.8

1994

6.4

2008

7.5

1972

7.4

1930

6.3

2011

5.1

1989

6.3

2008

5.8

1981

5.9

2013

5.7

2007

6.9

2014

5.7

2006

7.2

1973

6.4