1977

5.3

1985

4.4

1971

6.4

1998

3.4

1970

3.6

1971

5.1

1979

5.5

1969

5.4

1984

4.6

1976

5.9

2005

0.0

1966

3.8

1960

2.3

1999

2.8

1969

4.8

1968

6.0

1986

6.5

1969

6.8

1978

4.4

1967

6.5

1970

5.6

1965

6.0

1980

4.9

1988

4.3

1985

5.9

1973

5.5

2004

4.2

1984

6.1

1986

7.0

1991

4.7

1987

4.4

1982

4.6

1986

5.8

1992

4.7

1981

4.8

1983

4.6

1993

3.4

1994

2.5

1990

5.2

1988

0.0

1974

5.1

1964

4.3