1937

7.9

1966

7.3

2001

7.7

1999

5.7

1957

7.8

2001

7.4

1988

7.5

2003

0.0

1965

7.5

1940

8.3

1962

8.0

2002

6.1

1998

7.2

1979

5.0

2003

5.8

2007

6.9

1967

7.0

1991

7.7

1967

7.6

1961

0.0