| a |  | Projected estimate (medium fertility variant). | 
| b |  | 2022 | 
| c |  | Refers to the population of Brussels-Capital Region and "communes" of the agglomeration and suburbs. | 
| d |  | 2019 | 
| e |  | 2023 | 
| f |  | Data classified according to ISIC Rev. 4. | 
| g |  | Excludes irrigation canals and landscaping care. | 
| h |  | Excludes publishing activities. Includes irrigation canals. | 
| i |  | Includes publishing activities and landscape care. Excludes repair of personal and household goods. | 
| j |  | Estimate. | 
| k |  | Calculated by the UN Statistics Division from national indices. | 
| l |  | Data refers to a 5-year period preceding the reference year. | 
| m |  | Calculated by the UN Statistics Division. | 
| n |  | 2021 | 
| o |  | Data are as at 1 January of reporting year. | 
| p |  | Users in the last 3 months. | 
| q |  | Population aged 16 to 74 years. | 
| r |  | Break in the time series. | 
| s |  | Development Assistance Committee member (OECD). |