1997

6.5

2001

6.2

2021

7.3

2007

5.8

2008

6.2

1931

7.5

1996

6.6

2019

0.0

1973

6.7

1948

7.1

1942

5.8

1943

6.2

1939

6.7

1944

6.0

1974

7.5

1971

5.5

2006

6.8

1965

6.7

1973

3.1

1981

3.3