This is problematic because it means that young people are deferring saving for their pensions, and older persons do not have access to the full range of health services. There is a need to safeguard the efficiency and quality of social security systems and forge proper links between benefits and their funding, so as to make the benefits more attractive and therefore more highly valued. The exceptions are El Salvador, which registered a minor setback, and Uruguay (urban areas), where affiliation was already very high in 2002 (over 98%), and only marginal improvement was recorded.