查询结果如下：     

年份	分类	数值（千人、百分比）
2005	Number of poor families	7,657.00
2006	Number of poor families	7,668.00
2007	Number of poor families	7,623.00
2008	Number of poor families	8,147.00
2009	Number of poor families	8,792.00
2010	Number of poor families	9,400.00
2011	Number of poor families	9,497.00
2012	Number of poor families	9,520.00
2013	Number of poor families	9,645.30
2014	Number of poor families	9,467.00

 

数据来源：美国人口普查局