| Code | Type |
|---|---|
| $CurrentPeriodEndDate | xs:date |
| xs:date('2019-12-31') | |
| $CurrentPeriodStartDate | xs:date |
| xs:date('2019-01-01') | |
| $PreviousPeriodEndDate | xs:date |
| xs:date('2018-12-31') | |
| $PreviousPeriodStartDate | xs:date |
| xs:date('2018-01-01') | |
| $ReportingYear | xs:integer |
| 2019 | |