2006

7.5

1999

7.4

1978

6.0

2003

7.2

1964

7.1

1994

7.4

1950

8.1

2003

7.8

2001

6.2

1972

7.1

2001

7.4

1997

6.9

1962

8.0

1998

6.4

2002

7.6

1997

6.7

1998

8.3

1959

7.8

1999

7.0

1932

7.0