2008

5.3

1976

3.8

1972

0.0

2009

7.6

1984

5.7

2000

7.7

1975

9.6

1983

6.5

1982

9.5

1973

10.0

1981

7.0

1981

0.0

1989

8.7

1982

7.8

1990

8.8

1991

9.5

1986

7.0

2009

6.3

1987

6.0

1997

6.5

1983

5.7

1974

5.0

2003

6.8

2001

7.4

1985

7.0

1995

6.2

1999

4.0