2011

8.3

2001

7.6

2014

7.7

1999

7.9

2006

7.8

2010

6.9

1990

7.9

2021

7.0

2008

7.8

1993

8.4

2006

7.5

2010

7.2

1995

7.2

2016

7.1

2017

8.6

1998

7.1

2002

7.3

2013

7.3

1999

7.4

2003

8.4