2013

6.5

2015

5.1

2006

6.7

2013

8.4

1996

5.8

2014

7.8

1985

6.2

1984

7.2

2024

5.7

2016

6.1

1967

5.6

2009

5.4

2004

7.9

2016

6.7

2009

7.9

2011

6.0

2011

4.3

2014

6.9

1992

6.2

2017

6.9