TABLE 1: 'ARRIA-FORMULA' MEETINGS
The chart at the left shows the evolution of 'Arria-formula' meetings from their inception in 1992 to the year 2022.
As indicated, all Arrias were closed from 1992 until 2009. As of 2016, open Arrias have become the norm.
For a complete list of all 'Arria-formula' meetings, see the Arria Table maintained by the Security Council Practices and Charter Research Branch of the UN's Security Council Affairs Division, which is updated on a monthly basis.