Given the task definition and input, reply with output. In this task, you're given a context, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both context and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the context or linked information.

Context: In 1995, Albania was accepted into the Council of Europe and requested membership in NATO (obtained in 2009) Link Information: A monetary union was established in 1999 and came into full force in 2002 and is composed of 19 EU member states which use the euro currency Answer: 7
How long had the European Union been established when Albania was granted membership to NATO?