I would like to compare my income against a group of similar people using Cake (people with similar age, job, lifestyle, location, etc).

In order to correctly compare the income of users, we will request some questions to correctly benchmark the salary (job, job title, eco/mail vouchers, mobility budget, bonus plan, etc).

Note: The goal is to provide our users the ability to benchmark their income.

I would like to know how people with a similar income managed to negotiate a higher salary. This would allow me to confidently negotiate my raise.