2003

8.2

1972

4.8

1972

6.5

1965

6.7

1975

6.9

2005

6.2

0.0

1984

5.9

1955

7.3

1962

5.5

1933

7.6

1987

0.0

1991

6.4

1977

4.5

1999

6.7

1984

6.4

1991

7.4

1994

6.1

2014

6.6

2001

6.2