2003

8.0

2005

7.2

2000

8.2

2000

8.2

1994

8.3

2000

7.4

1982

6.7

2004

6.5

1982

7.5

1994

6.2

2005

6.3

1990

7.4

2003

7.2

1946

7.0

2006

6.7

2002

7.2

1971

7.2

2007

6.2

1985

6.6

2003

6.3