2004

7.2

2012

6.6

1984

6.8

1994

6.7

1997

7.5

2007

6.6

2004

5.9

2002

5.8

2016

6.9

1984

6.9

2010

7.0

2005

6.6

2017

10.0

2003

7.2

2017

5.6

1991

4.4

2006

7.8

2005

0.0

2000

7.3

2017

5.9