A. The Arizona criminal justice commission shall administer the state aid to county attorneys fund established by section 11-539. On or before September 1 of each year, the commission shall distribute monies in the fund to each county according to the following composite index formula:

1. The three-year average of the total felony filings in the superior court in the county, divided by the statewide three-year average of the total felony filings in the superior court.

2. The county population, as adopted by the office of economic opportunity, divided by the statewide population, as adopted by the office of economic opportunity.

3. The sum of paragraphs 1 and 2 of this subsection divided by two equals the composite index.

4. The composite index for each county shall be used as the multiplier against the total funds appropriated from the state general fund and other monies distributed to the fund pursuant to section 41-2421.

B. The board of supervisors in each county shall separately account for the monies transmitted pursuant to subsection A of this section and may expend these monies only for the purposes specified in section 11-539. The county treasurer shall invest these monies and interest earned shall be expended only for the purposes specified in section 11-539.

C. The Arizona criminal justice commission shall administer the state aid to indigent defense fund established by section 11-588. By September 1 of each fiscal year, the commission shall distribute monies in the fund to each county according to the following composite index formula:

1. The three-year average of the total felony filings in the superior court in the county divided by the statewide three-year average of the total felony filings in the superior court.

2. The county population, as adopted by the office of economic opportunity, divided by the statewide population, as adopted by the office of economic opportunity.

3. The sum of paragraphs 1 and 2 of this subsection divided by two equals the composite index.

4. The composite index for each county shall be used as the multiplier against the total funds appropriated from the state general fund and other monies distributed to the fund pursuant to section 41-2421.

D. The board of supervisors shall separately account for the monies transmitted pursuant to subsection C of this section and may expend these monies only for the purposes specified in section 11-588. The county treasurer shall invest these monies and interest earned shall be expended only for the purposes specified in section 11-588.

E. The Arizona criminal justice commission shall administer the state aid for juvenile dependency proceedings fund established by section 41-2410. On or before September 1 of each fiscal year, the Arizona criminal justice commission shall distribute monies in the fund to each eligible county in which the three-year average of the total juvenile dependency case filings in the superior court in the county exceeds the three-year average juvenile dependency case filings in the superior court of the county for fiscal years 2012-2013, 2013-2014 and 2014-2015 based on the proportional share of the increase in petitions for each county.

F. The board of supervisors shall separately account for the monies distributed pursuant to subsection E of this section and may spend these monies only for the purposes specified in section 41-2410. The county treasurer shall invest these monies and interest earned shall be spent only for the purposes specified in section 41-2410.

G. On or before January 8 each year, the commission shall report to each county board of supervisors, the governor, the legislature, the joint legislative budget committee, the chief justice of the supreme court and the attorney general on the expenditure of the monies in the state aid to county attorneys fund and the state aid to indigent defense fund for the prior fiscal year and on the progress made in achieving the goal of improved criminal case processing.