Since I've started collecting, None.
Prior to that (for the past 3.5 years) i had a rotation of CK One, Aqua Di Gio, Armani Code, and then Terre D' Hermes.
I used Terre D' Hermes into the ground when i got it a year ago and still have like 10 or so ml remaining. I got a little less then 25ml of ADG remaining. CK one and Armani Code which I've owned for possibly 4 years now I finished in the past half year.
Now these days I have something like 12 bottles to use and over 65 samplers and decants so I'm hard pressed to even use them properly.
I also apply them carefully now these days.