Note: the data included in the chart are estimates based on a survey. Consequently, a margin of uncertainty must be taken into account. Given the fluctuations of the yearly percentages , averages over two consecutive years are calculated. For the other European countries and for the EU28 this is the average of the two percentages rounded to the nearest unit. The years in the title refer to the year in which the survey was conducted. The share of e-commerce is calculated on the turnover in the year prior to the survey. See: ‘Further information on definitions and sources’.