| Year | Net volume of water supplied by water supply industry (million m3) | Losses during transport (million m3) |
|---|---|---|
| 2001 | 761.8 | 124.8 |
| 2002 | 772.9 | 126.4 |
| 2003 | 762.9 | 125.7 |
| 2004 | 747.2 | 115.8 |
| 2005 | 725.4 | 108.5 |
| 2006 | 697.3 | 112.6 |
| 2007 | 648.5 | 118.7 |
| 2008 | 575 | 139.5 |
| 2009 | 507.2 | 142.9 |
| 2010 | 507.3 | 142.9 |
| 2011 | 445.3 | 145.4 |
| 2012 | 476.9 | 139.2 |
| 2013 | 485 | 137.5 |
| 2014 | 483.5 | 136.3 |
| 2015 | 478.1 | 123.1 |
| 2016 | 464.1 | 109 |
| 2017 | 454.3 | 98.9 |