1984

4.6

2007

6.0

1979

7.7

1977

7.7

1993

7.4

2003

6.1

2004

5.6

2004

8.1

1987

7.3

1994

8.3

2002

7.0

1976

8.1

2000

6.3

2005

7.0

2024

7.8

2014

0.0

1978

6.3

1999

6.8

1999

7.1

1968

7.8