1972

4.2

1973

6.0

1974

6.2

1940

6.2

1944

5.6

1944

6.1

1957

5.5

1989

4.4

1989

4.5

1973

6.2

2019

7.2

1968

4.8

1972

5.5

1965

4.7

1987

4.6

1995

5.2

1921

6.5

1931

6.4

1987

5.9

1969

3.1