1990

5.8

1972

6.5

1973

6.9

1980

4.6

1971

3.5

1971

6.4

1976

6.6

1977

6.8

1976

6.0

1971

8.1

1985

5.3

2001

7.2

1970

6.5

1986

6.6

1993

7.0

1994

7.8

1984

6.7

1973

5.8

1965

6.4

1983

5.5

1955

6.5

1974

4.8

1980

1.0

1977

3.5

1972

6.4

1982

7.5

1973

6.9

1990

7.4

1969

6.5

1982

6.3

1969

6.1

1971

6.3

1975

7.2

2000

6.8

1965

5.3

1974

5.0

1961

4.8

1968

6.3

1966

6.5

1968

5.2

1974

7.4

1972

6.9

1972

7.0

1969

4.8

1979

6.3

1978

6.9