Well it's busier than when I used to live nearby in the 1970's. Apart from the Jersey/Guernsey puddle-jumpers, the only holiday flights were Mondays and Tuesdays I think. Dan-Air Comets/B727's and BCAL 1-11's mostly with the occasional Spanish charter airline.
Maybe if they changed the name to Bournemouth (London) Airport they'd have more success? Seems a shame they can't take a few long-haul O&D flights from Heathrow and put that long-ish runway to good use.