Paid caregivers and their assistants are self-employed and thus lack access to social protection. In contrast to Mexico, day-care services were expanded by increasing the availability of tax-financed public services for 0-3-year-old children from lower-income households. As a result, coverage increased from 17 per cent in 2006 to 26 per cent in 2011 and the gap in access to these services between socio-economic groups has also decreased.226 In addition, efforts have been made to provide services in ways that meet the needs of working mothers by ensuring that the majority of newly created childcare centres offer full-day and extended schedules. Yet, in common with Mexico, day-care services for under-3s are followed by a preschool system for 4- and 5-year-old children that offers largely part-time programmes and operates on a school year calendar, with extensive holidays.