Why is my list bigger than it should be?

I'm generating 3 random waypoints then saving them to a list but when debugged the list is showing a Count of 5, why?

 function getWaypionts ()
 {
     for (var l=0; l < 3; l++)
     {
         Debug.Log("l is " + l);
         var walkRadius : float = 10;
         var randomDirection : Vector3 = Random.insideUnitSphere * walkRadius;
         randomDirection += transform.position;
         var hit : NavMeshHit;
         NavMesh.SamplePosition(randomDirection, hit, walkRadius, 1);
         var finalPosition : Vector3 = hit.position;

         waypoints.Add(finalPosition);
     }
     for (var lk=0; lk < waypoints.Count; lk++)
     {
         Debug.Log("waypoint " + lk + " is " + waypoints[lk]);
     }
     waypointsGenerated = true;
 }