2008

7.9

1998

7.2

2018

7.3

2004

8.6

2009

7.1

2006

7.7

2011

6.0

2004

8.3

2015

7.1

1999

6.6

2002

8.4

2005

7.9

2001

6.6

2009

7.0

2011

7.4

1992

5.8

1999

7.1

2008

6.0

1999

7.6

2010

6.8