2008

0.0

1994

7.4

1981

7.6

2005

6.4

2008

6.4

1995

6.5

1983

6.8

1997

5.6

2015

6.3

2008

5.6

2004

7.3

1989

7.4

1989

6.0

2001

5.4

1994

6.8

2002

6.7

2002

7.1

2000

0.0

2005

5.8

2001

6.5