1966

7.6

2021

8.3

2008

8.9

2006

7.4

2002

7.5

2010

7.0

2001

8.0

2005

8.1

2010

7.2

1992

6.9

2003

8.2

2017

7.9

2014

7.6

2016

7.2

2005

7.6

2011

7.8

2011

7.6

1996

5.8

2008

7.6

2016

6.7