| Año | Valor |
|---|---|
| 1990-01-01 | 5124.487981 |
| 1991-01-01 | 5283.118255 |
| 1992-01-01 | 5261.661678 |
| 1993-01-01 | 5378.544097 |
| 1994-01-01 | 5521.660254 |
| 1995-01-01 | 5671.821583 |
| 1996-01-01 | 5810.674457 |
| 1997-01-01 | 5989.414319 |
| 1998-01-01 | 6180.549689 |
| 1999-01-01 | 6099.511522 |
| 2000-01-01 | 6146.029294 |
| 2001-01-01 | 6144.978295 |
| 2002-01-01 | 6193.263475 |
| 2003-01-01 | 6255.515583 |
| 2004-01-01 | 6407.838118 |
| 2005-01-01 | 6579.312289 |
| 2006-01-01 | 6778.384925 |
| 2007-01-01 | 6967.569880 |
| 2008-01-01 | 7272.166242 |
| 2009-01-01 | 7392.162593 |
Fuente: World Bank