Imagine a profession where there are 3 employees. A trainee makes $40,000, a middle level person makes $60,000 and the senior person makes $80,000. Because of a recession, the company terminates the trainee. So the professions average salary went from $60,000 per year to $70,000 per year. More than a 15% increase! It must be a great profession to work in, right? A key piece of information is that the base salary went up 15% but no one claims to have gotten 15% raises! In any case, these kind of surveys are far from scientific. There were only 715 respondents and the total number of people in the profession for less than one year was 8! The whole survey is worthless.