(a) Credit allowable. — The amount of annual credit allowable under this article to an eligible taxpayer is $250 for each new job at a new value-added steel product manufacturing facility located in this state, or at a new value-added steel product line of an existing manufacturing facility located in this state, that is filled by a full-time employee of the eligible taxpayer during the taxable year, subject to the following:
(1) When the new value-added steel product manufacturing facility, or the new steel product line of an existing value-added steel product manufacturing facility, is in operation for less than twelve months of the taxable year in which it is placed in service, the credit allowed by subsection (a) of this section shall be prorated by the ratio that the number of months in the taxpayer's taxable year during which the new value-added steel products facility, or the new products line of an existing value-added steel product manufacturing facility, was in service bears to twelve.