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