Hello,
It appears there is no functionality for the expression builder to accomodate "Current Year". This functionality is built into other Esri applications and has a very strong use case in your application as well. This seems to be an equivilancy issue.
This option is critical, as many individuals have a need to filter based on annual operations/summaries.
There is no option to set current year or even filter for year.

Example of ArcGIS Dashboard's Expression builder-

Please advise,
Amanda Huber