How can I find the outflows(withdrawals) of a bridge?

Hey guys, I'm trying to query the net inflows on zksync era bridge. However, the official bridge contract address: 0x57891966931Eb4Bb6FB81430E6cE0A03AAbDe063 Only gives the stats depositing to the bridge while no withdrawing. Wondering if they're using a separate address collecting the stats? Can somebody help me?