Purchasing e-learning material online in Great Britain 2011-2019

* The source indicates: "The source of this information is the Opinions and Lifestyle Survey (OLS). The OLS is a multi-purpose survey developed by ONS for use by government departments, other public bodies, charities, academics and the media. It provides a fast, cost effective and reliable way of obtaining information on topics too brief to warrant their own survey."
** The Opinions and Lifestyle Survey is carried out by interviewing a nationally representative sample of households in Great Britain. About 1,800 households are sampled each month and estimates are subject to sampling variability, as are those from all sample surveys.
Data for years previous to 2015 published earlier by the source.