1948

6.7

1931

4.7

1937

3.7

1939

0.0

1936

6.9

1952

5.0

1954

8.0

1987

7.1

1922

10.0

1995

6.7

1995

6.3

2002

6.2

2000

7.1

1993

6.1

1998

6.2

1997

7.7

1988

7.0

2005

6.9

1958

7.8

2007

3.3