1948

6.8

1931

5.1

1936

6.8

1952

4.7

1937

3.0

1939

0.0

1954

8.0

2002

7.3

1987

7.1

1988

7.0

2005

7.0

1993

6.9

1995

6.6

1943

6.5

1939

6.2

1983

6.2

2017

3.4

2003

7.1

2008

6.8

2002

6.2