Holidays Decided under the Authorisations function needs archiving as too big to work properly

The number of Decided holidays within the Authorisations function in our system has now reached 26,771 and increases everyday. This means searching for a record is taking forever...... They date back to when we first purchased PeopleHR and it will only get slower the more requests employees add. There needs to be an archive option or for it to only show the previous 2 years.