(a) Commencing July 1, 2005, the counties’ obligation to remit to the Trial Court Trust Fund each fiscal year the difference between thirty-one million dollars ($31,000,000) and the amount remitted to the Trial Court Trust Fund under Section 68085.5 shall expire. The counties thereafter shall be obligated to remit to the Trial Court Trust Fund the following amounts:

1. (1) In the 2005–06 fiscal year, twenty million dollars ($20,000,000).
2. (2) In the 2006–07 fiscal year, fifteen million dollars ($15,000,000).
3. (3) In the 2007–08 fiscal year, ten million dollars ($10,000,000).
4. (4) In the 2008–09 fiscal year, five million dollars ($5,000,000).
5. (5) In the 2009–10 fiscal year and thereafter, the obligation shall expire.

(g) The portion of the amount in subdivision (a) to be paid by each county shall be determined by the Administrative Office of the Courts (AOC) and the California State Association of Counties (CSAC) with the following conditions:

1. (1) Any county that did not receive a reduction of county remittances for support of trial courts to compensate for loss of civil assessment revenue under Section 68085.7 shall not be required to make any payments under this section.
2. (2) No county’s payment in any year, commencing in the 2005–06 fiscal year, shall be greater than 90 percent of the annual payment that county was required to pay toward the thirty-one million dollars ($31,000,000) in subdivision (e) of Section 68085.5 as it read on January 1, 2004.
3. (3) The AOC and the CSAC shall determine the portion of the amounts in subdivision (a) to be paid by each county on or before October 31, 2005. If the AOC and the CSAC do not agree on the portions, they may request a mutually agreed-upon third party to arbitrate and determine the portion for each county. The portions shall be determined on or before December 31, 2005.