2017

6.4

2008

7.6

2015

7.5

1984

7.5

1976

7.0

2014

7.1

1985

7.9

2010

6.7

2014

7.8

2012

8.3

2000

8.0

2004

7.2

2017

6.6

1986

7.7

2003

7.2

2008

7.1

2005

8.1

2013

7.5

2023

7.6

2006

7.3