Explanation of convention signs
| Dash (-) - the phenomenon has not occurred. |
| Zero (0) - the phenomenon existed, but in amounts smaller than the numbers that could be expressed with the numerical characters shown in the table. In accordance with the principle of observance of statistical confidentiality, the presented data were presented for the size of 3 or more people. |
| Dot (.) - complete lack of information or lack of reliable information. |
| Sign (x) - it is impossible or useless to fill in the position due to the layout of the board. |
| Sign (┌┌) - means "including", ie that not all components of the sum are given. |
| Sign (□) - information will be provided in the next period. |