record-breaking
adjective [ usually before noun ]
uk/ˈrekɔːdˌbreɪkɪŋ/ us/ˈrekərdˌbreɪkɪŋ/bigger in value, amount, or number, or better than anything that has happened before:
We look forward to another record-breaking year in terms of growth next year.
record-breaking sales/profits
a record-breaking $16 million/£900,000, etc. Last year the bank's CEO was awarded a record-breaking $53m bonus in cash, stock, and options.
a record-breaking deal/performance The market slowed after a record-breaking performance earlier in the week.