| in million U.S. dollars | |||||
| Monthly | Year-to-Date | ||||
| 2000 | Dec | 406 | -509 | ||
| 2001 | Dec | 878 | -202 | ||
| 2002 | Dec | 245 | 810 | ||
| 2003 | Dec | -80 | 115 | ||
| 2004 | Dec | 177 | -280 | ||
| 2005 | Dec | 276 | 2410 | ||
| 2006 | Dec | 631 | 3769 | ||
| 2007 | Dec | 719 | 8557 | ||
| 2008 | Dec | -275 | 89 | ||
| 2009 | Jan | 1735 | 1735 | ||
| Feb | 469 | 2204 | |||
| Mar | -472 | 1732 | |||
| Apr | 466 | 2198 | |||
| May | -55 | 2143 | |||
| Jun | 73 | 2216 | |||
| Jul | 506 | 2722 | |||
| Aug | 1070 | 3792 | |||
| Sep | 611 | 4403 | |||
| Oct | 896 | 5299 | |||
| Nov | -93 | 5206 | |||
| Dec | 1215 | 6421 | |||
| 2010 | Jan | 1233 | 1233 | ||
| Feb | -125 | 1108 | |||
| Mar | 161 | 1269 | |||
| Apr | 982 | 2251 | |||
| May | 386 | 2637 | |||
| Jun | 501 | 3138 | |||
| Jul | 92 | 3230 | |||
| Aug | 151 | 3381 | |||
| Sep | 3062 | 6443 | |||
| Oct | 2736 | 9179 | |||
| Nov | 3902 | 13081 | |||
| Dec | 1227 | 14308 | |||
| 2011 | Jan | 1606 | 1606 | ||
| Feb | -133 | 1473 | |||
| Mar | 2020 | 3493 | |||
| Apr | 1084 | 4577 | |||
| May | 217 | 4794 | |||
| Jun | 222 | 5016 | |||
| Jul | 1267 | 6283 | |||
| Aug | 2719 | 9002 | |||
| Sep | 719 | 9721 | |||
| Oct | 208 | 9929 | |||
| Nov | 364 | 10293 | |||
| Dec | -114 | 10179 | |||
| 2012 | Jan | 864 | 864 | ||
| Feb | 588 | 1452 | |||
| Mar | -209 | 1243 | |||
| Apr | -79 | 1164 | |||