1984

7.2

2005

6.2

1981

7.4

1985

0.0

1983

7.0

2002

6.0

1994

6.5

1986

3.0

2005

4.9

1986

0.0

1986

0.0

2001

6.0

2005

0.0

1990

6.0

2006

6.2