Regional Variation
Comparing the richest areas of the EU can be a difficult task. This is because the NUTS 1 & 2 regions are not homogenous, some of them being very large regions, such as NUTS-1 Hesse (21,100 km²) or NUTS-1 Île-de-France (12,011 km²), whilst other NUTS regions are much smaller, for example NUTS-1 Hamburg (755 km²) or NUTS-1 Greater London (1,580 km²). An extreme example is Finland, which is divided for historical reasons into mainland Finland with 5.3 million inhabitants and Åland, an autonomous archipelago with a population of 27,000, or about the population of a small Finnish city.
One problem with this data is that some areas, including Greater London, are subject to a large number of commuters coming into the area, thereby artificially inflating the figures. It has the effect of raising GDP but not altering the number of people living in the area, inflating the GDP per capita figure. Similar problems can be produced by a large number of tourists visiting the area. The data is used to define regions that are supported with financial aid in programs such as the European Regional Development Fund. The decision to delineate a Nomenclature of Territorial Units for Statistics (NUTS) region is to a large extent arbitrary (i.e. not based on objective and uniform criteria across Europe), and is decided at European level (See also: Regions of the European Union).
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