1997

6.4

1985

8.0

1966

0.0

2013

6.2

2017

5.8

1970

0.0

2007

6.7

1977

4.3

2004

0.0

1991

6.8

1990

7.7

2001

7.8

2004

7.3

1984

7.0

1917

5.0

1959

6.9

2000

6.4

1968

0.0

1970

0.0

1994

0.0