1994

7.8

1979

5.5

1964

8.1

1975

7.0

1958

6.8

1970

7.4

1987

5.0

1978

7.5

2001

7.0

1992

8.2

1995

7.0

1981

6.3

1953

6.0

2003

7.4

1995

6.8

1968

7.3

1986

6.7

1974

6.0

2003

8.1

2004

5.6