| Año | Valor |
|---|---|
| 1973-01-01 | 479999.989271 |
| 1974-01-01 | 949999.988079 |
| 1975-01-01 | 340000.003576 |
| 1976-01-01 | 50000.000745 |
| 1977-01-01 | 50000.000745 |
| 1978-01-01 | 939999.997616 |
| 1979-01-01 | 1240000.009537 |
| 1980-01-01 | 889999.985695 |
| 1981-01-01 | 1230000.019073 |
| 1982-01-01 | 7250000.000000 |
| 1983-01-01 | 4340000.152588 |
| 1984-01-01 | 9729999.542236 |
| 1985-01-01 | 2180000.066757 |
| 1986-01-01 | 3789999.961853 |
| 1987-01-01 | 2099999.904633 |
| 1988-01-01 | 4130000.114441 |
| 1989-01-01 | 4840000.152588 |
| 1990-01-01 | 8789999.961853 |
| 1991-01-01 | 7579999.923706 |
| 1992-01-01 | 7699999.809265 |
Fuente: World Bank