| Año | Valor |
|---|---|
| 1990-01-01 | 4369976028.000000 |
| 1991-01-01 | 4158857030.900000 |
| 1992-01-01 | 4332374230.300000 |
| 1993-01-01 | 4400366539.000000 |
| 1994-01-01 | 4965186858.300000 |
| 1995-01-01 | 5359275052.500000 |
| 1996-01-01 | 5275484513.900000 |
| 1997-01-01 | 5313085255.300000 |
| 1998-01-01 | 5688227905.200000 |
| 1999-01-01 | 5655151008.400000 |
| 2000-01-01 | 5892765188.400000 |
| 2001-01-01 | 4794042371.900000 |
| 2002-01-01 | 5107005795.500000 |
| 2003-01-01 | 5864138345.800000 |
| 2004-01-01 | 6284467791.500000 |
| 2005-01-01 | 6967641266.100000 |
| 2006-01-01 | 6255767963.500000 |
| 2007-01-01 | 5064781761.700000 |
| 2008-01-01 | 5701040187.500000 |
| 2009-01-01 | 5780325836.300000 |
Fuente: World Bank