2011

7.8

1941

7.0

1999

6.9

1999

7.2

2007

6.1

2016

6.8

2017

7.2

2013

6.4

2005

5.8

1994

8.7

1979

7.6

2004

6.7

2015

6.1

2011

7.0

2013

7.2

2012

6.3

2009

5.5

1975

7.7

2006

5.5

2016

8.2