I did some further research and came up with the following:

2011 - Appropriated $288,992,000 Actual Expenditures $174,391,000 (60.3% of what was appropriated)
2012 - Appropriated $251,153,000 Actual Expenditures $170,043,000 (67.7% of what was appropriated)
http://www.state.il.us/budget/fy2013...tingbudget.pdf
http://www2.illinois.gov/gov/budget/...BudgetBook.pdf

I don't completely understand how appropriations work, but it seems strange that the DNR is using only 60-70% of the funds they are allocated!