1981

4.5

1975

0.0

1979

4.3

1991

7.2

1988

0.0

1989

0.0

1976

3.5

1971

8.5

2005

1.0

2002

5.9

2001

6.3

1996

5.0

1970

0.0

1975

6.5

1996

4.0

1994

0.0

1987

0.0

1979

7.5

1974

6.0

1973

0.0

1990

4.7

1974

7.1

2009

0.0

1987

0.0

2007

0.0

1973

5.0

1975

0.0