查询结果如下：   

年份	分类	数值（百分比）
2000	Gross domestic purchases	2.60
2001	Gross domestic purchases	1.90
2002	Gross domestic purchases	1.40
2003	Gross domestic purchases	2.20
2004	Gross domestic purchases	2.90
2005	Gross domestic purchases	3.50
2006	Gross domestic purchases	3.20
2007	Gross domestic purchases	2.70
2008	Gross domestic purchases	2.90
2009	Gross domestic purchases	-0.20
2010	Gross domestic purchases	1.50
2011	Gross domestic purchases	2.40
2012	Gross domestic purchases	1.80
2013	Gross domestic purchases	1.40
2014	Gross domestic purchases	1.70
2015	Gross domestic purchases	0.40
2016	Gross domestic purchases	1.00
2017	Gross domestic purchases	1.80

 

数据来源：美国经济分析局（Bureau of Economic Analysis）