| Año | Valor |
|---|---|
| 1988-12-31 | 4617735043.000000 |
| 1989-12-31 | 4718924164.000000 |
| 1990-12-31 | 4871651735.000000 |
| 1991-12-31 | 5344170112.000000 |
| 1992-12-31 | 5659127763.000000 |
| 1993-12-31 | 5741542019.000000 |
| 1994-12-31 | 5994867896.000000 |
| 1995-12-31 | 6729660125.000000 |
| 1996-12-31 | 7403677712.000000 |
| 1997-12-31 | 7947302863.000000 |
| 1998-12-31 | 8513149818.000000 |
| 1999-12-31 | 8302788793.000000 |
| 2000-12-31 | 8416287358.000000 |
| 2001-12-31 | 8162416540.000000 |
| 2002-12-31 | 7927598322.000000 |
| 2003-12-31 | 8102676309.000000 |
| 2004-12-31 | 8791175884.000000 |
| 2005-12-31 | 9580076617.000000 |
| 2006-12-31 | 11526105025.000000 |
| 2007-12-31 | 13223258151.000000 |
Fuente: World Bank