Every broadcast in the archive, by year. A number in brackets was inferred from its neighbours, not read from the tape.
- 1971 17 broadcasts
- 1972 37 broadcasts · 1 on this site
- 1973 38 broadcasts · 1 on this site
- 1974 37 broadcasts
- 1975 34 broadcasts
- 1976 33 broadcasts
- 1977 51 broadcasts · 1 on this site
- 1978 49 broadcasts
- 1979 52 broadcasts
- 1980 52 broadcasts
- 1982 52 broadcasts
- 1983 67 broadcasts
- 1984 60 broadcasts
- 1985 44 broadcasts
- 1986 1 broadcasts