1960

7.5

1984

7.0

1994

8.7

1943

8.1

2002

6.6

2000

5.9

2004

6.8

1954

8.5

1930

7.2

1996

6.6

2003

7.8

2002

7.0

1990

7.8

1997

6.9

2004

7.3

1987

8.1

2003

7.6

1996

8.0

1989

7.4

2001

6.9