III. Factors influencing passenger demand for air transport
The diverging prevalence level of air transport across the considered EU and EFTA countries can be due to
several reasons. Some of these are described in more detail in the following section and incorporated in the
empirical analysis.
A. Population and age structure
Population size affects the demand for air travel since a larger demand basis increases the demand for
mobility. Hence, the population of a country has to be taken into consideration when estimating and
differentiating the demand for air travel. The six largest countries – Germany, France, the United Kingdom,
Italy, Spain and Poland – already make up almost 70 per cent of the population within the country sample of the
EU28 and EFTA countries (Figure 5). Hence, a high share of mobility demand will be generated within these
countries alone.
Air Transport Research Society World Conference 2017
7
Population (in million)
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