| Año | Valor |
|---|---|
| 1980-01-01 | 772.779524 |
| 1981-01-01 | 981.381289 |
| 1982-01-01 | 930.593010 |
| 1983-01-01 | 880.461180 |
| 1984-01-01 | 982.081210 |
| 1985-01-01 | 838.080052 |
| 1986-01-01 | 604.257338 |
| 1987-01-01 | 649.708769 |
| 1988-01-01 | 672.607173 |
| 1989-01-01 | 675.469994 |
| 1990-01-01 | 682.676810 |
| 1991-01-01 | 733.935488 |
| 1992-01-01 | 759.571135 |
| 1993-01-01 | 756.637016 |
| 1994-01-01 | 774.035670 |
| 1995-01-01 | 852.754035 |
| 1996-01-01 | 922.113259 |
| 1997-01-01 | 970.351843 |
| 1998-01-01 | 1022.145065 |
| 1999-01-01 | 979.344495 |
Fuente: World Bank