| Año | Valor |
|---|---|
| 2000-01-01 | 58.721803 |
| 2001-01-01 | 53.556600 |
| 2002-01-01 | 51.001677 |
| 2003-01-01 | 47.880520 |
| 2004-01-01 | 42.650701 |
| 2005-01-01 | 39.795159 |
| 2006-01-01 | 35.177888 |
| 2007-01-01 | 34.346428 |
| 2008-01-01 | 31.494834 |
| 2009-01-01 | 34.021430 |
| 2010-01-01 | 36.029022 |
| 2011-01-01 | 36.753506 |
| 2012-01-01 | 38.965804 |
| 2013-01-01 | 40.931095 |
| 2014-01-01 | 43.749719 |
| 2015-01-01 | 51.448872 |
| 2016-01-01 | 57.408646 |
| 2017-01-01 | 58.618441 |
| 2018-01-01 | 62.628414 |
| 2019-01-01 | 65.839704 |
Fuente: World Bank