2001

7.6

1993

6.6

2010

8.5

1995

7.8

1997

7.5

2004

8.0

2004

8.2

2008

8.9

2016

7.0

1987

8.4

2011

8.5

2008

8.1

2006

7.9

2004

8.3

2005

8.6

2010

7.1

2018

7.2

2003

6.0

1996

6.4

2004

7.9