2005

5.8

2013

8.4

2010

7.5

1973

9.2

2006

10.0

2011

7.2

2019

8.2

2010

6.2

2015

5.3

2007

9.8

2018

7.7

2010

7.2

2006

6.2

2009

7.0

1969

8.3

2014

5.6

2008

6.5

2013

6.2

2003

5.4

1994

7.3