Collection of Foundation Cracks

All on the same 1 story ranch built in 1996. Perimeter foundation with post & beam structure. The cracks were spread out around the exterior walls, approximately one crack every 10-20 feet. No cracking of interior drywall was observed. Due to vapor barrier covering the inside of the foundation walls I could not determine if these cracks went to the interior walls in crawlspace.

Normal shrinkage cracks or something to be concerned about?