Stating your sample size for the surveys results cited in your report is an intellectual act of honesty about one’s methodology. This will help build credibility and improve the overall quality of your substantiation of ideas.
Even if your respondent pool size isn’t perfectly representative of your larger population, at least give reason why this number was the best you could reach given your limited resources and time.
Wondering what a ‘sample size’ is? Try using the online Sample Size Calculator to help you generate a number within reasonable confidence levels and intervals.