| Año | Valor |
|---|---|
| 1980-01-01 | 0.019319 |
| 1981-01-01 | 0.024535 |
| 1982-01-01 | 0.059558 |
| 1983-01-01 | 0.204267 |
| 1984-01-01 | 3.079807 |
| 1985-01-01 | 368.779527 |
| 1986-01-01 | 1161.357225 |
| 1987-01-01 | 1335.054065 |
| 1988-01-01 | 1580.789627 |
| 1989-01-01 | 1818.151100 |
| 1990-01-01 | 2165.894582 |
| 1991-01-01 | 2627.935278 |
| 1992-01-01 | 2962.720125 |
| 1993-01-01 | 3227.119674 |
| 1994-01-01 | 3576.444970 |
| 1995-01-01 | 4093.511009 |
| 1996-01-01 | 4679.367010 |
| 1997-01-01 | 5098.478936 |
| 1998-01-01 | 5632.155255 |
| 1999-01-01 | 5692.349777 |
Fuente: World Bank