| Año | Valor |
|---|---|
| 1990-01-01 | 36538326982.603200 |
| 1991-01-01 | 38462627717.127200 |
| 1992-01-01 | 39095914183.689400 |
| 1993-01-01 | 40765034529.688800 |
| 1994-01-01 | 42667646760.383500 |
| 1995-01-01 | 44663757293.307700 |
| 1996-01-01 | 46611696477.679200 |
| 1997-01-01 | 48920937219.835700 |
| 1998-01-01 | 51381344702.302800 |
| 1999-01-01 | 51600684172.767100 |
| 2000-01-01 | 52894731707.967000 |
| 2001-01-01 | 53785372738.810200 |
| 2002-01-01 | 55122243535.574700 |
| 2003-01-01 | 56616794883.606600 |
| 2004-01-01 | 58979581087.209300 |
| 2005-01-01 | 61587323823.494100 |
| 2006-01-01 | 64541673181.502000 |
| 2007-01-01 | 67487603159.069700 |
| 2008-01-01 | 71637077004.938200 |
| 2009-01-01 | 74041933375.039000 |
Fuente: World Bank