10+ times but most on mountain bike, which I don't do much of anymore. As mentioned already if you don't fall off MTB'ing you're not trying hard enough. Too many nettles and bramble incidents to mention.
Hit a rambler in the Lake District, whoops, only clipped her elbow, she was fine as I did a cartwheel somersault combo into the ferns.
Been doored twice, its normally the kind of thing you only do once but I was drunk the 2nd time.
Comedy one (to witness but not from my perspective) was trying to do a short cut through bushes along a disused railway line and failed to see the 2 metal cables they used to have as railway fences hidden in the undergrowth, they almost cut me in half, big scrapes up both arms followed by a WWF somersault and slam on my back.
Worst one was high speed black ice mountain bike slam on left hip on concrete, couldnt walk properly for 6 weeks.
Only had 2 in last 4 years of road biking and both losing front wheel on ice. I think I'm finally getting the hang of it! (And also I'm over 40 now so I'm more snappy/breaky than bouncy so I've calmed down)