| Año | Población |
|---|---|
| 2000 | 18,470,000 |
| 2001 | 18,685,000 |
| 2002 | 18,892,000 |
| 2003 | 19,090,000 |
| 2004 | 19,278,000 |
| 2005 | 19,458,000 |
| 2006 | 19,627,000 |
| 2007 | 19,786,000 |
| 2008 | 19,938,000 |
| 2009 | 20,085,000 |
| 2010 | 20,229,000 |
| 2011 | 20,370,000 |
| 2012 | 20,509,000 |
| 2013 | 20,644,000 |
| 2014 | 20,773,000 |
| 2015 | 20,895,000 |
| 2016 | 21,010,000 |
Fuente: World Bank
