| 年份 | 总额误差率 | 支出误差率 | 收入误差率 |
| 2010 | 0.74% | 1.05% | 1.87% |
| 2011 | 0.74% | 1.71% | 1.47% |
| 2012 | 1.88% | 0.67% | 2.02% |
| 2013 | 4.29% | −1.99% | 1.22% |
| 2014 | −1.59% | 1.61% | −5.30% |