| Año | Valor |
|---|---|
| 1980-01-01 | 15261228343.000000 |
| 1981-01-01 | 15303290787.000000 |
| 1982-01-01 | 14700534269.000000 |
| 1983-01-01 | 14106320827.000000 |
| 1984-01-01 | 14078014280.000000 |
| 1985-01-01 | 13842011887.000000 |
| 1986-01-01 | 13485734530.000000 |
| 1987-01-01 | 13817953526.000000 |
| 1988-01-01 | 14219986602.000000 |
| 1989-01-01 | 14758942717.000000 |
| 1990-01-01 | 15443135928.000000 |
| 1991-01-01 | 16256452800.000000 |
| 1992-01-01 | 16524115000.000000 |
| 1993-01-01 | 17229578400.000000 |
| 1994-01-01 | 18033728500.000000 |
| 1995-01-01 | 18877396200.000000 |
| 1996-01-01 | 19700704000.000000 |
| 1997-01-01 | 20676718000.000000 |
| 1998-01-01 | 21716623500.000000 |
| 1999-01-01 | 21809328600.000000 |
Fuente: World Bank