| Año | Valor |
|---|---|
| 1970-01-01 | 1.962986 |
| 1971-01-01 | 0.175169 |
| 1972-01-01 | 1.259958 |
| 1973-01-01 | 0.364039 |
| 1974-01-01 | 2.105030 |
| 1975-01-01 | 2.560248 |
| 1976-01-01 | -0.296340 |
| 1977-01-01 | -0.037163 |
| 1978-01-01 | 0.305843 |
| 1979-01-01 | 0.775967 |
| 1980-01-01 | 1.056094 |
| 1981-01-01 | 1.310033 |
| 1982-01-01 | 0.555318 |
| 1983-01-01 | 0.129294 |
| 1984-01-01 | 0.113465 |
| 1985-01-01 | 0.185968 |
| 1986-01-01 | 0.252565 |
| 1987-01-01 | 0.876274 |
| 1988-01-01 | -0.219679 |
| 1989-01-01 | -0.517391 |
Fuente: World Bank