2007

5.9

1988

5.2

2008

6.7

1989

7.9

2007

6.3

2014

7.7

1986

5.8

2009

5.6

2016

6.9

2006

6.2

2004

5.7

2024

6.6

2005

6.8

1992

6.8

2014

6.5

2010

6.3

2008

6.3

2013

6.0

2024

7.0

2016

5.1