| a | | 2017 |
| b | | Refers to the Greater Copenhagen Region, consisting of (parts of) 16 municipalities. |
| c | | 2019 |
| d | | 2018 |
| e | | Data classified according to ISIC Rev. 4. |
| f | | Excludes publishing activities. Includes irrigation and canals. |
| g | | Excludes repair of personal and household goods. |
| h | | Excludes computer and related activities and radio/TV activities. |
| i | | Estimate. |
| j | | Calculated by the UN Statistics Division from national indices. |
| k | | 2016 |
| l | | Undisclosed (Special categories). |
| m | | Data refers to a 5-year period preceding the reference year. |
| n | | Data as at the end of December. |
| o | | 2014 |
| p | | Data are as at 1 January of reporting year. |
| q | | Population aged 16 to 74 years. |
| r | | Provisional data. |
| s | | Excluding the Faroe Islands and Greenland. |
| t | | Break in the time series. |
| u | | Development Assistance Committee member (OECD). |