The market administrator shall establish and maintain a separate fund known as the “producer settlement fund” into which he shall deposit all payments and out of which he shall make all payments pursuant to sections 20.72 through 20.77 of this Part. All amounts subtracted under section 20.61(d), inclusive of interest earned thereon, shall remain therein as an obligated balance until it is withdrawn for the purpose of effectuating section 20.61(e) of this Part.