1962

5.0

1964

5.1

1973

0.0

1976

5.3

1989

6.5

1974

3.5

1987

5.7

1965

0.0

1969

4.6

1970

5.9

1963

3.8

1977

2.5

1983

6.1

1976

4.2

1981

5.5

1977

5.7

1983

5.2

1963

6.8

1968

6.5

2008

4.1