In 1972, what arrangement was instituted, and why was that an improvement?
٩ أَيُّ تَرْتِيبٍ جَرَى تَأْسِيسُهُ سَنَةَ ١٩٧٢ ،‏ وَلِمَاذَا تَبَيَّنَ أَنَّ هذَا ٱلتَّرْتِيبَ كَانَ بِمَثَابَةِ تَحْسِينٍ ؟‏