Since 2007, the Institute of Service Excellence at SMU (ISES) has been polling customers of companies from the services sectors to find out how satisfied they are with the level of service delivered. Only the larger brands for whom ISES was able to gather, more than 250 survey responses had been individually scored on the Customer Satisfaction Index of Singapore (CSISG) rankings. ISES Academic Director Assistant Professor Marcus Lee said: "By nature of the fact that the national score is representative of customer satisfaction levels across Singapore, the CSISG has very high resolution for the largest companies and conversely very low resolution for the smaller ones." Any small- and medium-sized enterprises (SMEs) feeling left out of the customer-satisfaction loop can also now pay to get measured.