The index of new orders in manufacturing describes development in the value of new orders received by enterprises for commodities and services that are meant to be produced by establishments located in Finland. The task of the index of new orders in manufacturing is to provide rapid and reliable information about the development of new orders. In addition, the compiled statistics indicate how production and turnover are likely to change in future. Calculation of the index is based on the estimation of change. Sums by industry are calculated with data on the enterprises for which comparable data are available for both the examined month and the corresponding month of the previous year. The obtained sums are used to calculate annual changes by industry. The calculation of annual changes also allows for the restructuring of enterprises and for changes of industry. These annual changes are used to raise the index of new orders from the corresponding month of the year before. Indices for aggregated levels of classification are obtained by weighting the indices of new orders at the three-digit level. Estimates of the values of the entire population’s new orders at the three-digit level are used as the weights. The latest index figures for the past 12 months can become revised as new data become available and enterprises correct the information already given. The statistics and indices compiled from the data are public under the condition that no individual enterprise’s data can be identified from them.