1962

6.9

1954

7.6

1989

5.9

1978

7.2

1970

3.3

1971

0.0

1957

7.8

1993

5.5

1972

4.2

1959

4.0

1978

6.4

2003

1.8

1972

7.2

2000

4.8

1985

2.0

1999

6.0

1976

6.6

2004

7.3

2002

4.0

1982

4.1