1934

6.5

1987

6.5

1935

4.5

1986

5.3

2003

6.4

1986

7.4

1985

6.6

1994

6.3

1990

4.9

1971

4.5

1996

5.3

1962

6.9

2001

6.4

1984

6.8

1993

6.2

2005

4.3

1964

6.0

2008

6.7

1924

8.0

1920

5.4