| Year | Water supply industry (ISIC 36) | Agriculture, forestry and fishing (ISIC 01-03) | Manufacturing (ISIC 10-33) | Electricity industry (ISIC 351) | Other economic activities |
|---|---|---|---|---|---|
| 1990 | 556 | 2054 | 409 | 824 | 15 |
| 1995 | 422 | 1444 | 8 | 122 | 3 |
| 2000 | 494 | 785 | 7 | 725 | 0 |
| 2001 | 568 | 1049 | 9 | 425 | 1 |
| 2002 | 574 | 607 | 7 | 361 | 2 |
| 2003 | 565 | 533 | 12 | 149 | 1 |
| 2004 | 551 | 591 | 11 | 171 | 3 |
| 2005 | 551 | 672 | 13 | 285 | 2 |
| 2006 | 466 | 606 | 13 | 595 | 4 |
| 2007 | 451 | 901 | 19 | 317 | 12 |
| 2008 | 465 | 1065 | 18 | 272 | 4 |
| 2009 | 509 | 1101 | 20 | 221 | 2 |
| 2010 | 782 | 1013 | 17 | 136 | 2 |
| 2011 | 676 | 1309 | 18 | 300 | 1 |
| 2012 | 726 | 1344 | 58 | 283 | 1 |
| 2013 | 693 | 1154 | 56 | 213 | 1 |
| 2014 | 690 | 1098 | 54 | 227 | 1 |
| 2015 | 481 | 1084 | 55 | 242 | 1 |