Should I Be Concerned When My Anion Gap Has Been Consistently Low?

MY AGAP HAS BEEN 8, 7 AND 5 CONSISTENTLY LOW (SCALE 10 mmol/L - 20 mmol/L) FOR THE LAST 2 YEARS, I JUST LEARNED AFTER ROUTINE BLOOD WORK DEMONSTRATED THIS ON A 2 YEAR CHART HISTORY. All other markers are in normal range. I have a long history of high blood pressure and a very stressful job.