2002

6.1

2007

4.9

2017

4.4

2001

1.3

1985

7.0

2004

6.5

2015

7.5

2008

3.8

2005

7.3

2016

5.0

2000

6.2

2014

6.2

2007

6.6

1971

4.8

2002

6.3

2006

6.5

2004

5.4

2003

4.1

1996

7.2

2001

7.8