I have had the same result every time, Taken it this year, 3 years ago and two years before that, same result every-time (INTP). Not only that I score similar % as well. Answer the questions HONESTLY and you will see the expected result. If your someone who is well balanced say your never really more than 60% on on something means that you will see more variation of your result if you get different questions or your not honest with yourself and you chose the middle answer for every answer..

Except the result aren't always consistent. Like you do the test your classified introvert, then you take the same test next week your classified extrovert