| Año | Valor |
|---|---|
| 1980-01-01 | 100180000.618100 |
| 1981-01-01 | 99710001.641885 |
| 1982-01-01 | 89469999.853522 |
| 1983-01-01 | 138510001.778603 |
| 1984-01-01 | 121829999.195412 |
| 1985-01-01 | 141530000.261963 |
| 1986-01-01 | 218540001.168847 |
| 1987-01-01 | 228449999.993667 |
| 1988-01-01 | 252190001.551062 |
| 1989-01-01 | 318389997.042716 |
| 1990-01-01 | 390209996.854886 |
| 1991-01-01 | 376219996.610656 |
| 1992-01-01 | 534519997.321069 |
| 1993-01-01 | 458310001.205653 |
| 1994-01-01 | 413360002.828762 |
| 1995-01-01 | 542000002.168119 |
| 1996-01-01 | 626399993.862957 |
| 1997-01-01 | 489969998.041168 |
| 1998-01-01 | 445990001.447499 |
| 1999-01-01 | 427480002.623051 |
Fuente: World Bank