1999

6.1

1976

5.5

2003

8.0

1975

5.9

2009

0.0

1967

6.5

1990

10.0

1970

5.0

1966

4.5

2002

5.0

2007

8.2

1972

6.0

2004

5.9

2003

8.4

1982

0.0

2009

4.0

1986

5.7

1986

1.0