| Año | Valor |
|---|---|
| 1990-01-01 | 3782128620.300000 |
| 1991-01-01 | 3627113833.900000 |
| 1992-01-01 | 3767038817.300000 |
| 1993-01-01 | 3788247141.900000 |
| 1994-01-01 | 4211031072.500000 |
| 1995-01-01 | 4545748451.600000 |
| 1996-01-01 | 4340220518.200000 |
| 1997-01-01 | 4209465571.800000 |
| 1998-01-01 | 4368377526.100000 |
| 1999-01-01 | 4315702864.800000 |
| 2000-01-01 | 4209341524.700000 |
| 2001-01-01 | 3194375307.700000 |
| 2002-01-01 | 3582211732.600000 |
| 2003-01-01 | 4182918936.600000 |
| 2004-01-01 | 4578512066.800000 |
| 2005-01-01 | 4589843582.900000 |
| 2006-01-01 | 3198539466.300000 |
| 2007-01-01 | 2178149345.900000 |
| 2008-01-01 | 2421319357.700000 |
| 2009-01-01 | 2572014064.400000 |
Fuente: World Bank