The authorities in St Maarten (and Curaçao) continue to discuss the introduction of a new currency in 2012, including the possibility of adopting the US dollar as the monetary unit. Currently, St Maarten and Curaçao use the Netherlands Antilles guilder (Naf), but if St Maarten were to dollarise its economy (it is seriously considering a switch), Curaçao would be likely to follow suit. The BES islands (Bonaire, St Eustatius and Saba; the three islands which formed part of the Federation of the Netherlands Antilles alongside St Maarten and Curaçao, and which-since the dissolution of the Federation in 2010-form part of the Netherlands) are already using the US dollar. Emsley Tromp, the president of the Central Bank, has spoken in favour of dollarisation, but representatives of Curaçao's commercial banks oppose the switch as they would stand to lose most of their revenue from foreign exchange operations.