2007

5.9

2007

7.7

2004

7.3

2005

6.2

2004

7.4

2005

7.7

1979

6.8

2007

6.7

2001

7.5

1997

7.2

2002

7.6

1999

6.1

2006

0.0

2005

5.2

2001

7.8

2004

7.7

1998

5.0

1987

8.2

1973

6.8

1985

7.5