EEA standard re-use policy: unless otherwise indicated, re-use of content on the EEA website for commercial or non-commercial purposes is permitted free of charge, provided that the source is acknowledged (http://www.eea.europa.eu/legal/copyright). Copyright holder: European Environment Agency (EEA).
Therefore, as a provisional solution, a conventional time period of 10 years has been set between the two databases. It could be used as well, an average European time span, weighted or not by country surface.
Developing countries often gain little financial benefit from the influx of visitors to their shores. Only around 30 % of the money spent by tourists on their holiday remains in the host country. Eco tourism is promoted in some countries. For sustainable destinations, explore EU’s catalogue at www.eco-label.com or the National Geographic's portal at www.nationalgeographic.com/travel/sustainable.
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