Database
[{"year":{"$date":"2021-08-25T08:44:55.576Z"},"Status":"New"},{"year":{"$date":"2021-08-25T09:59:49.270Z"},"Status":"New"},{"year":{"$date":"2021-08-25T10:27:00.003Z"},"Status":"Rejected"},{"year":{"$date":"2022-01-10T08:12:25.816Z"},"Status":"Rejected"},{"year":{"$date":"2022-01-10T08:13:07.423Z"},"Status":"Rejected"}]
Query
db.collection.aggregate([{$group:{_id:{year:{$year:"$year"},status:"$Status"}}},{$replaceWith:{$mergeObjects:["$_id","$$ROOT"]}},{$unset:"_id"}])