1977

5.3

1994

4.3

1976

5.0

1967

5.0

1985

3.8

1914

5.6

1966

3.7

2005

4.1

1948

5.6

1996

4.0

1978

5.1

2011

6.6

1965

6.8

1967

6.7

1992

5.1

1984

5.9

1985

0.0

2015

6.0

1987

5.8

1972

5.7