I have zero (been here since last November). Then again I seriously can't remember ever being bitten by a mosquito. Everyone tells me that they hurt and itch and the like, but nope, nothing. Closest I've had was a mark on my leg (that didn't hurt or itch) but turned out to be because I kept hitting my leg on the bed here (slightly different shape to what I'm used to).
We also use those Raid wall plugins all the time just incase. Although it's mainly for her as she seems to be a complete mosquito bite sponge and completely opposite to me
Also never been stung by a bee or wasp or pretty much any other insect I can remember. Hmmm. Something strange about me then? Should bottle my sweat or something. Ewww. Perhaps not...
Cheers