I haven't calculated the exact number, but I estimate that I take about one thousand photos for every one that I end up posting online. Unless there's a particular image that really hits me, I often don't sort/process photos until months after an adventure.
In this case, I went up to the eastern Sierra Nevada Mountains in California last October. The peak of fall foliage was a few weeks later than it had been in previous years, but I managed to time my trip pretty well. The orange leaves of the quaking aspen trees glow beautifully when backlit by mid-day sun, so I ended up taking hundreds of photos during the day. However, it wasn't until early evening that I found this softly lit scene. It was the spindly bare white branches of the aspen trees and their leaves in various stages of autumn color stacked almost vertically against a steep hillside that made an image that struck me as fall time in the Sierra.
I look forward to going back this fall!