As a comparison, given the same increase in regulation, they assume banks between $ million and $ billion would hire three employees and experience a decline of about 4 basis points in return on assets for the median bank.
The Netherlands was the first country to adopt this policy, and Duisenberg had already defended it strongly when he was Minister of Finance (73-77). During Duisenberg's entire presidency, the Netherlands was a participant in the ERM, the exchange rate mechanism of the European Union, that had started in 1979.