Around 775, the land and head taxes yielded an estimated 1,600,000 "nomismata"/7.2 tonnes of gold annually for the empire. Commerce during this period slumped, therefore only contributing 200,000 "nomismata" annually. The expenditures of the period were quite large when compared to the annual revenues. Approximately 600,000 "nomismata" went to the payroll of the army annually while other military costs took another 600,000 "nomismata" annually. Supporting the Byzantine bureaucracy needed 400,000 "nomismata". Also, imperial largess cost the treasury 100,000 "nomismata" every year. All of these expenses meant that the Byzantine government had only about 100,000 "nomismata" in surplus revenue each year for treaties, bribes, or gifts.