2008

5.3

1976

4.4

1972

0.0

2009

7.0

1984

5.7

2000

7.0

1975

9.8

1982

10.0

1973

10.0

1981

0.0

1989

8.7

1982

7.7

1990

9.0

1991

10.0

1986

7.0

2009

6.4

1987

6.0

1997

6.5

1983

5.5

1974

5.0

2003

6.8

2001

7.4

1985

7.0

1999

4.0