>>3912
Strictly speaking, we're seeing the same number of UFOs. It's a matter of definition; we saw something, photographed or no, and we don't know what it was. That's a UFO.
What has changed are the explanations. Saucers 'a flying and anallinguistic aliens don't cut it. Too many UFOs sightings were sufficiently examined and shown to be natural phenomenon, or man made. Add to that the clearly insane, plus the usual rate of hallucination found in people who are otherwise healthy and sane. What's left over? "We still don't know what that was," along with one important key detail, "and noting remotely interesting happened attached to the sighting."
Even photorealistic evidence isn't always the graveyard of alien civilization. People still think there's a giant face on Mars, more recent photograph of the site be damned, etc.
Ho hum.
All is not lost though. We still have pop-economic theories, grand sweeping ideology, politics, and big name news services to keep us all starry eyed and freaked the fuck out.