2006

7.4

1996

6.7

1994

7.2

2010

10.0

2014

8.5

2016

5.1

2003

6.3

1988

6.6

1999

7.4

2006

10.0

1998

6.5

1993

7.2

2009

6.0

1996

9.5

2003

6.0

1979

7.4

2007

4.7

2005

6.8

1996

6.4

2005

6.8

2017

5.6

1989

8.0

2004

6.2

1992

5.4

2012

7.8