Dutch Trader - your survey and the comments in your first post are asking for various things - % made on all forex deposits vs % return PER MONTH - was that deliberate?
You will have more willing contributors should you clearly state the goal of the thread and what you expect to learn or share from it if it's merely out of curiosity then perhaps you will not get much response.
More importantly, this is not a criticism of you but just a general remark - it's not difficult to understand why folks are curious about just how much cash do you make, or what % returns do you get, but in my humble view these questions come near typifying the attitudes and approaches which determine the majority of traders will finally (or quickly) loose cash.
The more legitimate approach might be to ask how do you manage risk to make sure that you don't loose money? If more traders focussed on this in their research and in the implementation of their trades, and less on the just how much can I create then I suggest we'd would have fewer bodies in the trading wastelands.