2003

3.8

2000

8.0

1979

6.8

2008

6.2

2018

8.1

2004

7.4

1995

6.4

2012

8.4

2004

7.9

1998

8.2

2014

8.4

2003

7.6

2007

7.9

1973

7.0

2017

6.4

2000

7.6

2010

7.8

2005

8.2

2011

7.9

2012

6.3