Guernsey 2,453 employing businesses. 19.6% work in the finance industry and median earnings were £31,215. Public services, such as water, wastewater, the two main harbours and the airport are still owned and controlled by the States of Guernsey. The electricity, and postal services have been commercialised by the States and are now operated by companies wholly owned by the States of Guernsey. Gas is supplied by an independent private company. In 1998, Guernsey and Jersey jointly formed the Channel Islands Electricity Grid to operate and manage the submarine cables between Europe and the Channel Islands. The installation of these cables provided
External relations of Guernsey more integrated relationship with the Commonwealth of Nations, including more direct representation and enhanced participation in Commonwealth organisations and meetings, including Commonwealth Heads of Government Meetings, however with no right to vote in the Ministerial or Heads of Government meetings. Both Alderney and Guernsey are members of the Commonwealth Parliamentary Association. The Bailiwick of Guernsey which includes Alderney, Sark, Herm and the other smaller islands is a member of the Commonwealth Games Federation and has attended every games event since the inauguration in 1970. In 2011 Guernsey, which had previously been unrated, was awarded a AAA credit rating by Standard