The file size is approximately 1MB, -snip-
Anyways, you can't just generate an address in receive tab because it'll produce a random keypair, you'll have to sync the wallet 'till that date, it's about 30-40GB worth of blocks.
Or are you asking how to get the transaction IDs and the 'transactions' tab is populated with year2015 transactions?
If so, just double-click any transaction and you'll see a Transaction ID in bold there, the 64 characters next to it is the txid.