2012

4.8

1990

7.4

2004

7.9

2000

7.7

2006

7.1

2009

8.0

2005

8.3

1993

10.0

2004

7.9

1994

7.8

1999

8.2

2005

8.2

2007

6.5

1992

0.0

2007

8.1

1989

6.6

2000

8.5

1986

7.1

2005

7.5

2011

7.4

2009

8.0

1999

6.5

2012

7.1

2001

8.1

1993

8.4

1987

6.3

1994

6.7