CV Query!

lv 0 > lv 1 doesn't have a set requirement, it's enough to giveaway one game nd you're lv 1. From there you have set cvs.

https://www.steamgifts.com/discussion/XaCbA/list-of-all-cv-levels-and-their-corresponding-real-cv

You need $25 CV sent to get to level 2.
https://www.steamgifts.com/discussion/XaCbA/list-of-all-cv-levels-and-their-corresponding-real-cv

According to SGTools, your CV sent is $17.24, $7.76 more to get you to level 2
http://www.sgtools.info/sent/shantanuthakur1/newestfirst

1 lvl: 15$
2 lvl: 15$ * 2 = 30$
20$ is about 66% from 30$.
So, I think "Levels increase almost exponentially, meaning each level requires double the contributions of the previous level." mean u need to giveaway x2$ in relation to spent on previous level.
But I can remember system which described by tzaar's first link