The increase is exponential. Look at both commolaw's and aconsciousness's wallet. You will notice that:

1. for the last couple of weeks I haven't been doing much of anything.
2. I have on commonlaw almost 100 SP and aconsciousness has 47 SP.

https://steemd.com/@commonlaw = 99 days

https://steemd.com/@aconsciousness 38 days

Keep writing in the contest and find others if you want to increase your token income. It really isn't that hard, it is just the doing of it . lol