barnesef

I would like to ask why the more points that one accumulates and the higher one's ranking is the longer it take to progress up the ladder. for example At the moment I am standing at Marshal with 146429 points. Since the beginning of the month I have downloaded 74 gb of everything but my percentage has only increased by 3% from 85% to 88%. If any has an answer and can let me know I'll appreciate it very much. Thankig in advance Ernest