| Year |
Metered |
Unmetered |
Commercial |
Other |
Total |
| 1998 |
569 |
1774 |
446 |
1944 |
4733 |
| 1999 |
641 |
1809 |
451 |
1973 |
4874 |
| 2000 |
679 |
1710 |
442 |
2073 |
4904 |
| 2001 |
749 |
1755 |
461 |
1902 |
4867 |
| 2002 |
792 |
1705 |
475 |
2227 |
5199 |
| 2003 |
958 |
1706 |
478 |
2254 |
5396 |
| 2004 |
990 |
1594 |
474 |
2001 |
5059 |
| 2005 |
1048 |
1515 |
479 |
1992 |
5034 |
| 2006 |
1111 |
1369 |
464 |
1861 |
4805 |
| 2007 |
1161 |
1337 |
469 |
1543 |
4510 |
| 2008 |
1235 |
1266 |
469 |
1489 |
4459 |
| 2009 |
1295 |
1276 |
459 |
1660 |
4690 |
| 2010 |
1393 |
1210 |
481 |
1593 |
4677 |
| 2011 |
1374 |
1163 |
437 |
1739 |
4713 |
| 2012 |
1384 |
1101 |
448 |
1749 |
4682 |
| 2013 |
1441 |
1106 |
465 |
1629 |
4641 |
| 2014 |
1454 |
1067 |
421 |
1500 |
4442 |
| 2015 |
1482 |
1026 |
420 |
1599 |
4527 |
| 2016 |
1491 |
1023 |
409 |
1651 |
4574 |
| 2017 |
1512 |
970 |
397 |
1663 |
4542 |