Date

Symbol

Title

Total

Yearbook (See also > DPI publication > Subject listing: History etc.)

57

2005

1

2004

1

2003

1

2002

2

2001

1

2000

1

1999

1

1998

1

1997

1

1996

1

1995

1

1994

1

1993

1

1992

1

1991

1

1990

1

1989

1

1988

1

1987

1

1986

1

1985

1

1984

1

1983

1

1982

3

1981

1

1980

1

1979

1

1978

1

1977

1

1976

1

1974

1

1973

1

1972

1

1971

1

1970

1

1967

1

1966

1

1965

1

1962

1

1961

1

1960

1

1959

1

1958

1

1957

1

1956

1

1955

1

1954

1

1953

1

1952

1

1951

1

1950

1

1949

1

1948

1

1947

1

68751