| 年份 | 分类 | 数值（十亿美元） |
| 2005 | Sources of private enterprise income | 5,804.40 |
| 2006 | Sources of private enterprise income | 6,748.70 |
| 2007 | Sources of private enterprise income | 7,064.20 |
| 2008 | Sources of private enterprise income | 6,542.30 |
| 2009 | Sources of private enterprise income | 5,832.90 |
| 2010 | Sources of private enterprise income | 6,107.00 |
| 2011 | Sources of private enterprise income | 6,363.80 |
| 2012 | Sources of private enterprise income | 6,611.20 |
| 2013 | Sources of private enterprise income | 6,620.20 |
| 2014 | Sources of private enterprise income | 6,874.10 |
| 2015 | Sources of private enterprise income | 7,010.00 |
| 2016 | Sources of private enterprise income | 7,067.90 |