Another revealing indicator is the so-called tourism intensity. To calculate this indicator, the number of arrivals or overnight stays in a region is set in relation to the number of people living there. It thus provides an estimate of the tourism potential. Tourism intensity serves as an indicator of the relative importance of tourism for a region. It is generally a better indicator of the economic importance of tourism in a region than the absolute number of overnight stays. With regard to the sustainability of tourism, it is also an indicator of the potential impacts it may have.
Source: Eurostat, 2010
https://ec.europa.eu/eurostat/documents/3217494/5725865/KS-HA-10-001-11-DE.PDF.pdf/9baf973e-0f9c-48e9-9c34-869a6afbfd70?t=1414775809000