The results of December 2010 round of customer satisfaction survey showed that satisfied NSO clients reached 81.9 percent. This figure is about 4.3 percentage points higher than the 77.6 percent rate registered in September 2010. Satisfaction ratings in March and June of 2010 were posted at 69.4 percent and 72.1 percent, respectively. Satisfaction rating refers to the percentage of clients surveyed during the period who were either satisfied or very satisfied with NSO's civil registry services.

The number of clients who were either satisfied or very satisfied with NSO's civil registry services in June 2005 continued to drop to 59.6 percent from 63.5 percent in March 2005. It decreased by about 15 percentage points in just six months since December 2004 when satisfaction rating was at 74.8 percent.

Seventy-one percent (71%) of NSO's clients are either satisfied or very satisfied with its civil registry services. This was the result of the September 2003 round of the Customer Satisfaction Survey (CSS. This was 4 percentage points higher than a year ago at 67 percent in September 2002. In June 2003 it was 70 percent.