2004

6.4

1985

5.3

1987

5.7

1967

6.6

1985

5.3

1935

7.5

1984

6.2

1973

6.9

2005

5.4

1987

4.0

1990

5.7

1948

7.1

1942

5.8

1969

6.3

1943

6.2

1939

6.7

1957

6.8

1967

6.4

1974

7.3

1974

6.2