1972

6.8

1979

7.0

2002

4.6

1980

5.4

1983

6.2

1972

5.0

1994

7.8

1995

4.8

1983

6.4

1993

7.0

1991

4.7

1995

7.3

1973

7.0

1986

8.3

1967

6.7

1978

7.1

1996

4.3

1973

7.1

1974

6.2

1974

7.0

1971

6.4

1996

5.7

1987

4.0

1982

6.3

1972

6.6

1980

6.0

1978

6.8

1974

5.0

1973

2.5

1987

4.8

1974

6.0