1971

2.0

1991

7.3

1980

5.8

1975

4.0

2002

2.0

2004

6.2

1977

6.9

1988

0.0

0.0

1980

7.1

1969

5.5

1999

6.5

1967

0.0

1984

5.2

1989

3.0

1987

6.6

1964

7.0

2001

2.0

1966

6.7

1985

10.0

1991

7.5

2000

6.0

1978

0.0

1992

6.5

1982

3.3

1998

8.0