2001

6.6

2002

5.3

1996

7.2

2004

6.6

2003

5.0

1992

5.0

2008

3.5

2008

5.7

2002

6.3

2003

6.8

2000

6.2

1969

2.0

2014

5.7

1971

2.5

1972

1.0

1978

7.5

1981

0.0

1980

2.0

1972

4.5

2017

0.0