1955

7.2

1943

5.3

1975

4.0

2001

5.6

2007

6.2

2007

7.4

2004

7.0

1951

5.2

2002

6.4

2008

6.8

1999

6.4

2001

6.4

1954

3.0

1993

6.7

1940

7.6

1990

7.3

1970

0.0

1971

0.0

1978

0.0

1981

0.0