I have no clue what your career is. Without knowing that I can give two pieces of advice:
1. Pursue a RELEVANT course to further your skills that bring value to a company. 2. Switch companies. No need to change careers, but the statistics show that the best way to get the biggest raise is to look externally from your current employer. The average % annual raise from staying at a company over 5 years is less than the % raise from employer jumping.
Just don't do point 2 too often. You don't want your resume to give the impression that you wouldn't be a loyal employee.