查询结果如下：     

年份	国家/地区	数值（百分比）
2005	Aruba	8.59
2006	Aruba	8.92
2007	Aruba	9.23
2008	Aruba	9.55
2009	Aruba	9.90
2010	Aruba	10.30
2011	Aruba	10.60
2012	Aruba	10.94
2013	Aruba	11.33
2014	Aruba	11.75
2015	Aruba	12.20

 
数据说明：Population ages 65 and above as a percentage of the total population. Population is based on the de facto definition of population, which counts all residents regardless of legal status or citizenship.
数据来源：data.worldbank.org_World Development Indicators