I have the same amount of experience and addressed this via my resume as well as a very brief (1 sentence) narrative note. (I'll be 30 in June and thus have been working for a much longer period than most applicants. My resume speaks for itself.
... applications submitted by 27,183 applicants for the 2016–2017 academic ... year. Applicants are up 2.4% and ... will be around 56,631 applicants for 2016-17.
Out of curiosity, how do law schools look at applicants that have taken the LSAT 4 times in 3 years? Do they see that as persistence/hard work and continue to look at the highest score, or do they average it out and think you're crazy?