2005

7.7

1962

6.7

2010

7.5

2000

6.9

1952

6.8

2010

7.3

1996

3.3

1899

5.2

1902

5.0

1937

0.0

1981

6.4

1963

7.1

1997

7.0

1960

8.2

1988

6.6

1943

8.1

1985

7.0

1998

7.4

1946

7.8