| Año | Valor |
|---|---|
| 2001-01-01 | 5.735510 |
| 2002-01-01 | 6.270144 |
| 2003-01-01 | 5.560149 |
| 2004-01-01 | 6.145485 |
| 2005-01-01 | 6.922708 |
| 2006-01-01 | 11.919458 |
| 2007-01-01 | 23.132929 |
| 2008-01-01 | 35.182931 |
| 2009-01-01 | 33.269517 |
| 2010-01-01 | 23.932828 |
| 2011-01-01 | 30.160463 |
| 2012-01-01 | 30.888843 |
| 2013-01-01 | 27.908882 |
| 2014-01-01 | 27.640477 |
| 2015-01-01 | 27.097365 |
| 2016-01-01 | 17.223182 |
| 2017-01-01 | 17.795798 |
| 2018-01-01 | 16.138106 |
| 2019-01-01 | 16.670194 |
| 2020-01-01 | 21.651190 |
Fuente: World Bank