1800 1value 3valuekAggregate may be incomplete40xData not available, classified data (statistical confidentiality) or providing data impossible or purposeless70aValue less then approved presentation format9valuesPreliminary estimates11valueMMethodological changes13valueKMethodological changes, aggregate may be incomplete140XMethodological changes, data not available, classified data (statistical confidentiality) or providing data impossible or purposeless15- The '-' sign means no information due to: changes in the level of presentation or in the list of territorial units or modification of the list of variables in a given statistical period170AMethodological changes, value less then approved presentation format20valuevLow-precision data21valuevLow-precision data50- or 0nData is not available yet, will be available910xData not available, classified data (statistical confidentiality) or providing data impossible or purposeless940zSignificant value, the zero result of non-zero input data of the algorithm, e.g. zero natural increase, if the number of deaths is equal to the number of births97valuepIncluding data for the powiat and the city with powiat status980ZMethodological changes, significant value, the zero result of non-zero input data of the algorithm, e.g. zero natural increase, if the number of deaths is equal to the number of births