2004

5.6

2003

6.2

2014

6.3

1976

7.6

1995

6.5

2015

3.0

2007

6.9

2000

5.8

2016

4.2

1992

5.0

2004

3.1

2005

5.0

2003

4.5

2009

7.5

2017

1.0

2010

5.9

2007

7.4

2009

4.7

1974

3.6

2012

7.1