| Major Object | 2016 | 2015 | 2014 | 2013 |
| Continuous Charges | $103,273,538 |
$99,357,988 |
$97,583,634 |
$87,300,309 |
Contractual Services | $225,876,134 |
$208,600,757 |
$212,800,193 |
$205,947,396 |
Equipment | $56,545,248 |
$57,941,804 |
$67,443,254 |
$67,523,002 |
Obligations | $44,861,511 |
$39,305,377 |
$34,385,948 |
$39,439,175 |
Personal Services | $762,029,988 |
$719,094,531 |
$680,560,599 |
$651,530,795 |
Plant And Improvements | $68,876,190 |
$75,070,011 |
$59,671,153 |
$114,616,176 |
Property Improvements | $591,450 |
$1,040,259 |
$1,295,756 |
$724,482 |
Supplies And Materials | $79,168,005 |
$74,095,301 |
$73,071,386 |
$74,861,222 |
Transfer Payments | $333,898,459 |
$322,368,325 |
$306,173,200 |
$281,997,470 |
