Howcome the number of dividends aren't going down when people lose? Since they are out they should not be counted in dividends
The total number of diviends, allways goes up, because it ist how many times some amount have been distribued to active investments. When players lose and go out, what changes is the stake of each player. If for example you deposited 0.1 BTC and the total BTC value in active investments is 1 BTC, you have a 10% stake (so you receive 10% of every dividend that is ditributed). If one investment of 0.5 BTC value loses and goes out, now the total is 0.5 BTC and your stake now is 20%. In conclusion, what increases when some players goes out is the stake of the remaining investments.