2006

7.0

1926

5.6

1986

6.4

2011

6.5

1993

5.5

2007

7.2

2012

7.2

2007

7.4

2010

5.2

2015

6.3

1980

8.4

2013

5.5

2013

5.6

2014

6.4

1991

7.0

2013

6.9

2012

7.3

1982

5.9

1972

6.2

2013

5.4