[{"Date":ISODate("2021-08-05T04:59:54.000Z"),"Amount":999,"Business":"Business 1",},{"Date":ISODate("2021-08-05T04:59:54.000Z"),"Amount":5.99,"Business":"Business 2",},{"Date":ISODate("2021-07-17T21:41:56.000Z"),"Amount":20000,"Business":"Business 2",},{"Date":ISODate("2021-06-17T21:41:56.000Z"),"Amount":200,"Business":"Business 5",}]

db.collection.aggregate([{$group:{_id:{year:{$year:"$Date"},month:{$month:"$Date"}},sum:{$sum:"$Amount"}}},{"$sort":{"_id.year":1,"_id.month":1}},{"$group":{"_id":"$_id.year","sumAmount":{$sum:"$sum"},"months":{"$push":{"month":"$_id.month","amount":"$sum"}}}}])