2007

6.2

1953

7.2

2015

5.7

2006

6.4

2014

5.5

2008

5.1

1950

7.0

1951

7.9

1966

6.5

1992

6.6

2005

6.4

1935

6.5

2006

5.0

2010

6.6

2003

7.0

1987

6.8

1993

6.3

2002

6.1

2013

6.3

2007

7.2