(b) If state-supported debt is issued to refund or otherwise affect the refunding, retirement or defeasance of state-supported debt originally issued on and after April first, two thousand, provided such refundings are conducted in accordance with section thirteen of article VII of the state constitution, the calculation of the total outstanding principal amount of debt shall exclude such refunding debt, and shall only include the amount of prior refunded debt, as if it were still outstanding, in each year until such refunding debt is finally retired. Notwithstanding the foregoing, the provisions of such section thirteen of article VII of the state constitution relating to the maintenance or management of escrow funds and sinking funds shall only be applicable to state-supported debt issued by the state comptroller. If state-supported debt is issued to refund or otherwise affect the refunding, retirement or defeasance of state-supported debt issued prior to April first, two thousand, then the amount of such refunding debt shall be excluded from the calculation of the total outstanding principal amount of debt in each year until such refunding debt is finally retired. In addition, if state-supported debt is retired or defeased with payments in any fiscal year made by the state that are not required by mandatory payments, such debt shall be excluded from the calculation of the total outstanding principal amount of debt, including retirements or defeasances accomplished on an economic basis. 2. State-supported debt may not be contracted for unless, as of October thirty-first, two thousand one and as of each October thirty-first thereafter, the total amount of interest, installments of principal, contributions to sinking funds, and related payments on a cash basis of accounting for state-supported debt in the immediately preceding fiscal year is less than the designated percentage of total governmental funds receipts for such fiscal year. Nothing shall preclude the contracting of state-supported debt prior to October thirty-first of each year if, in the immediately preceding fiscal year, the total amount of interest, installments of principal, contributions to sinking funds, and related payments was less than the designated percentage of total governmental funds receipts. This shall include the total amount of payments on such debt issued on and after April first, two thousand, but shall not include payments in any fiscal year made by the state to defease or retire debt not required by mandatory payments nor payments made by the state for debt issued to refund debt that was issued prior to April first, two thousand. In addition, if state-supported debt is issued to refund or otherwise affect the refunding, retirement or defeasance of state-supported debt originally issued on and after April first, two thousand, provided such refundings are conducted in accordance with section thirteen of article VII of the state constitution, the calculation of the total amount of interest, installments of principal, contributions to sinking funds, and related payments shall exclude payments made on such refunding debt, and shall only include the payments on the prior refunded debt, as if it were still outstanding, in each year until such refunding debt is finally retired. Such designated percentage shall be seven and one-half-tenths of one percent for fiscal year two thousand--two thousand one, and shall increase by five-tenths of one percent in fiscal year two thousand one--two thousand two, by an additional four-tenths of one percent in fiscal year two thousand two--two thousand three, and by an additional one-third of one percent in each of the ten subsequent fiscal years. The designated percentage for fiscal year two thousand thirteen--two thousand fourteen and for each fiscal year thereafter shall be five percent. 3. No state-supported debt shall be contracted except to finance capital works or purposes. 4. Notwithstanding any other provision of law to the contrary, no state-supported debt shall be issued with a final maturity of more than thirty years. 5. The provisions of this section shall apply to debt issued pursuant to section nine of article VII of the state constitution only to the extent that such notes remain outstanding.