2002

7.9

1992

7.2

2008

7.5

1999

7.0

2012

8.1

1987

6.7

2000

7.5

2003

7.2

2014

7.2

2006

8.1

2002

8.0

1998

7.5

2001

7.9

1993

7.9

2017

7.4

2002

8.2

2010

7.7

2005

7.0

2017

7.7

2000

7.4