17-7-501. Appropriations -- type. There are three types of appropriations within the meaning of "appropriation made by law" as used in Article VIII, section 14, of the Montana constitution:

(1) temporary appropriations enacted by the legislature as part of designated appropriation bills or sections designated as appropriations in other bills;

(2) temporary appropriations made by valid budget amendment; and

(3) statutory appropriations made by permanent law in conformance with 17-7-502.