2001

5.0

1978

0.0

1998

5.5

1994

0.0

2000

6.0

2009

5.0

2007

7.0

2010

0.0

1989

4.0

1973

0.0

1993

5.0

1991

4.8

1992

5.6

1986

5.8

2005

5.4