There are LOTS of people before who didn't cycle I'll give you an example:
1, 2, 3, all numbers are people and line is 200%:
1 buys a position, 2 buys a position and 1 gets some from it, 3 buys a position and 1 gets cycled.
Now 2 and 3 are waiting to cycle, 4 buys a position and 2 gets some, 5 buys a position and 2 gets cycled.
Now 3, 4 and 5 are waiting to cycle this means every cycle the number of people waiting to cycle is more probably if you are position 322 then your going to get cycled at 500-600