1989

6.4

1994

7.3

2005

5.5

2002

5.3

2010

4.7

2007

1.0

2006

6.0

1989

6.0

1986

8.0

1986

0.0

1986

0.0

1984

0.0

1982

0.0

1985

0.0

0.0

1983

6.8

2004

4.7

2004

7.2

1997

6.3

1998

5.7