1993

6.2

1973

0.0

2009

6.6

1998

4.0

1975

6.2

2013

5.4

2000

5.6

1997

3.2

1992

1.0

2008

4.0

1980

0.0

1978

5.3

1974

4.8

1990

4.5

1970

3.0

1999

4.0

1980

0.0

1998

2.8

1975

2.4

1976

0.0