1999

0.0

1974

0.0

1959

0.0

1995

9.0

2003

0.0

2005

6.8

1990

6.5

1975

5.5

1970

0.0

0.0

2000

0.0

2007

0.0

1981

7.2

2002

1.0

1999

7.8

2003

8.5

1992

7.7

1993

6.9

1985

7.7

2004

5.5