1970

5.4

1957

5.2

1971

5.1

1975

5.9

1973

5.7

1983

4.3

1975

5.5

1961

3.5

1988

4.9

1991

4.1

1960

6.5

1956

6.1

1957

5.7

1971

1.0

1985

4.4

2018

6.0

1964

4.5

1981

2.2

1957

5.7

1974

4.1

1959

4.7

1982

5.0

1958

3.9

1970

5.4

1969

2.2

1967

5.7

1958

5.0

1971

3.5