1918

0.0

1991

7.3

2009

6.4

2008

6.6

2002

6.4

1994

6.7

1941

7.4

1970

7.0

2003

5.5

1991

6.4

1992

7.5

2004

5.6

1943

0.0

1984

6.5

2008

5.8

1998

7.0

1986

5.9

1947

7.0

1937

6.0

1991

6.5