| Date | (US$ Billion) |
|---|---|
| 2006.02 | 256.98 |
| 2006.01 | 257.30 |
| 2005.12 | 253.29 |
| 2005.11 | 251.78 |
| 2005.10 | 252.01 |
| 2005.09 | 253.75 |
| 2005.08 | 254.09 |
| 2005.07 | 253.56 |
| 2005.06 | 253.62 |
| 2005.05 | 253.17 |
| 2005.04 | 252.64 |
| 2005.03 | 251.14 |
| 2005.02 | 246.63 |
| 2005.01 | 242.74 |
| 2004.12 | 241.74 |
| 2004.11 | 239.13 |
| 2004.10 | 235.03 |
| 2004.09 | 233.01 |
| 2004.08 | 231.61 |
| 2004.07 | 230.40 |
| 2004.06 | 230.09 |
| 2004.05 | 229.00 |
| 2004.04 | 227.66 |
| 2004.03 | 226.52 |
| 2004.02 | 224.80 |
| 2004.01 | 214.93 |
| 2003.12 | 206.63 |
| 2003.11 | 202.83 |
| 2003.10 | 196.61 |
| 2003.09 | 190.58 |
| 2003.08 | 185.67 |
| 2003.07 | 182.21 |
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