1972

7.0

2006

5.9

2007

5.8

1984

0.0

1993

5.5

1982

7.0

2000

7.3

1973

4.0

1983

7.0

1986

0.0

1998

5.0

2001

4.7

1991

3.0

1990

6.0

1976

8.3

2005

5.8

1982

0.0

1987

0.0