(2) Issue the tax credits on a pro rata basis to all applicants entitled to receive tax credits in that year. Any amount of tax credits, which an applicant is, or applicants are, entitled to receive on an annual basis and are not issued due to the twenty million dollar limitation, shall be carried forward for the benefit of the applicant or applicants to subsequent years. No tax credits provided under this section shall be authorized after August 28, 2013. Any tax credits which have been authorized on or before August 28, 2013, but not issued, may be issued, subject to the limitations provided under this subsection, until all such authorized tax credits have been issued.