Although I tend to do alot of shuffling around, on average I typically carry:
Winter: I carry 3 nymphs patterns all small 16 - 20 ...
Summer I carry ~6 nymph patterns in couple of different sizes (mostly 14s), ~ 8 dry fly patterns of various sizes, ~ 4 streamer patterns.
I like to come up with my own patterns so I'm usually playing with a few experimental patterns, whatever the time of the year. If I find a pattern that working great I usually drop my bottom performer when I go through my carrying boxes...
I only carry a limited number of any one fly with me, however I keep about 2 years worth of inventory of my favorite flies at home...
This is just for the Bow. I have alot of specialty stuff I use once in a while lake fishing etc.