1951

1952

1953

1954

1955

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

nb

0

40

38

36

33

30

30

29

29

28

0

hdv

4 800

5 194

3 286

2 874

2 304

2 364

2 050