1986

6.7

1974

6.0

2003

8.1

2004

5.6

1980

5.3

1985

0.0

1973

7.1

1979

6.1

1972

7.7

1980

6.8

2000

6.1

1997

8.5

0.0

1954

5.5

2004

6.8

1959

7.1

1985

7.4

1967

7.7

2005

7.8

1980

5.0