Indices are compiled in accordance with the balance method of European Union. The balance is calculated as the difference between the percentages of postitive and negative responses and 100 is added to this difference, thus forming a separate diffusion index of each question. Then, the general index is calculated by taking arithmetic means of diffusion indices of the questions included in consumer confidence index.The index is evaluated between 0 and 200. If it is above 100, it means consumer confidence is optimistic. If it is below 100, consumer confidence is pessimistic. 100 refer to neutral opinion in consumer confidence.