Bonds may be issued under this Article only if approved by a vote of the qualified voters of the issuing unit as provided in this Article, except that voter approval shall not be required for:
Pursuant to Article V, Sec. 4(2) of the Constitution, the General Assembly hereby declares that the purposes authorized by G.S. 159-48(a)(4), (6), and (7) and by G.S. 159-48(b), (c), (d), and (e) (except purposes authorized by G.S. 159-48(b)(3), (11), (16), (22), or (23) or by G.S. 159-48(d)(2)) are purposes for which bonds may be issued without a vote of the people, to the extent of two thirds of the amount by which the outstanding indebtedness of the issuing county, county water and sewer district, metropolitan water district, or city was reduced in the last preceding fiscal year.
N.C. Gen. Stat. § 159-49