The answer to the question is not enough, as the EU have banned them as inefficient, and it's getting harder to find them for use in our fixtures.
Where I am, incandescents are still available in at least some of the traditional styles but not by the well-known manufacturers of old, such as Osram and GE. It's all Lyvia, Maxim etc. with the usual "badge-engineering" varieties in our local shops.
Hard to find
good quality lamps on the shelves now.
As for my count, one less as of the other night .. another of the
Orbitec 100W globes lit briefly then went EOL last night, causing a CLICK from the loft stairs, at least not far to go to reset the breaker but of course the loft stair light also went out, making it hard to see the breaker. Thankfully the dimmer survived, I've had them on full brightness for a while for the extra heat.
Now both downlighters have Lyvia 100W GLS lamps in them. I'll put more Orbitec globes in but will have to save a few for posterity; not sure how many I have left now. They last ages dimmed though.