EXTRACT(YEAR FROM BLOCK_TIMESTAMP) AS "Year",

count(TX_ID) AS "OP_Return TX"

FROM bitcoin.core.fact_outputs

WHERE PUBKEY_SCRIPT_ADDRESS IS NULL

AND PUBKEY_SCRIPT_ASM LIKE 'OP_RETURN%'

AND PUBKEY_SCRIPT_TYPE = 'nulldata'

GROUP BY 1

ORDER BY 1;