1947

6.0

1946

6.0

1969

6.0

1973

7.4

1998

5.5

1965

6.8

1967

6.7

1956

6.2

2007

7.5

2015

0.0

1975

6.0

1968

6.9

1966

6.3

1966

6.4

1968

3.7

2003

5.0

2018

5.0

1990

4.8

1977

5.7

2011

3.9