The query results as follows：   

Years	Country/Area	Value(%)
2005	Aruba	100.43
2006	Aruba	108.98
2007	Aruba	107.33
2008	Aruba	101.71
2009	Aruba	100.86
2010	Aruba	104.39
2011	Aruba	102.13
2012	Aruba	106.52
2013	Aruba	105.34
2014	Aruba	105.80
2015	Aruba	NA
2016	Aruba	NA
2017	Aruba	NA

Data Description: Total enrollment in pre-primary education, regardless of age, expressed as a percentage of the total population of official pre-primary education age. GER can exceed 100% due to the inclusion of over-aged and under-aged students because of early or late school entrance and grade repetition.
Data Sources: World Development Indicators
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Links to relevant data：

• Gross enrollment ratio, primary, both sexes (%)
• Gross enrolment ratio, tertiary, both sexes (%)
• Gross enrolment ratio, secondary, both sexes (%)