| Año | Valor |
|---|---|
| 1976-01-01 | 0.000000 |
| 1977-01-01 | 0.000000 |
| 1978-01-01 | 0.000000 |
| 1979-01-01 | 0.000000 |
| 1980-01-01 | 0.011235 |
| 1981-01-01 | 0.001731 |
| 1982-01-01 | 0.001786 |
| 1983-01-01 | 0.001847 |
| 1984-01-01 | 0.000162 |
| 1985-01-01 | 0.003719 |
| 1986-01-01 | 0.010103 |
| 1987-01-01 | 0.039099 |
| 1988-01-01 | 0.041326 |
| 1989-01-01 | 0.021205 |
| 1990-01-01 | 0.022598 |
| 1991-01-01 | 0.037430 |
| 1992-01-01 | 0.035437 |
| 1993-01-01 | 0.034875 |
| 1994-01-01 | 0.036782 |
| 1995-01-01 | 0.029783 |
Fuente: World Bank