I worked in this IT company since Feb 2009. I am a fresh grad graduated from a part time IT degree.

Salary for first year till now is as follow :

1st year (2009) : $2400
2nd year (2010) : $2700
3rd year (2011) : $2950
4th year (2012) : $3050
5th year (2013) : $3350
6th year (2014) : $3790
Current year (2015) : $4090

Am I underpaid ?