| 年份 | 分类 | 数值（十亿美元） |
| 2005 | Opening balance:Produced assets | 37,380.90 |
| 2006 | Opening balance:Produced assets | 41,138.50 |
| 2007 | Opening balance:Produced assets | 44,461.40 |
| 2008 | Opening balance:Produced assets | 46,521.30 |
| 2009 | Opening balance:Produced assets | 47,908.00 |
| 2010 | Opening balance:Produced assets | 46,873.50 |
| 2011 | Opening balance:Produced assets | 47,990.40 |
| 2012 | Opening balance:Produced assets | 49,614.50 |
| 2013 | Opening balance:Produced assets | 51,195.30 |
| 2014 | Opening balance:Produced assets | 53,605.40 |
| 2015 | Opening balance:Produced assets | 55,652.30 |