Two series of the show were produced between 2003 and 2004.

A television series based on the film has been produced.

A television series based on the book was produced in 1999.

This series was produced until at least the early 1990s.

It is not yet known if another series will be produced.

It was to take eight years to produce the entire series.

The 230 series appeared in 1971 and was produced through 1975.

As of November 2011, no such series has been produced.

He produced several successful series for the network in the 1950's and early 60's.

A second series of figures was designed but never produced.