2009

8.0

1990

6.9

2015

7.6

2008

7.3

2009

8.3

2006

8.2

2010

7.9

2009

8.3

2016

7.2

1970

6.2

2017

7.1

2022

7.5

2013

7.5

2016

6.8

2000

7.7

1992

6.8

1989

7.8

2010

7.6

2004

7.5

2011

7.3