Earlier this month I made an appointment for Pascal the plumber to come and sweep our chimney. We are obliged to get the chimney swept by a professional once a year in order to ensure our house insurance is valid. The professional group entrusted with chimney sweeping in France are the plumbers. Pascal commented that we didn't have a lot of material accumulated in the chimney and was surprised to learn we use the wood stove every day in the winter.
Curiously, in the spring right at the end of the firelighting season, we had a couple of instances of something catching fire in the flue (at least, that's what we assume was happening -- there was a lot of noise of rushing air, and a few sparks and flakes of black material coming out the top). Probably birds dropping twigs down the chimney which then catch fire according to our neighbour.
We asked Pascal about the possibility of fitting a self-regulating trap on the flue, to slow down the draw. He said we could install such a thing, but the payoff is that they rattle.