shall be guilty of a felony and, upon the first conviction thereof, shall be punished by imprisonment of not less than one nor more than five years, a fine of not less than $5,000.00, or both such fine and imprisonment. On a second or subsequent conviction, such person shall be punished by imprisonment of not less than one nor more than ten years, a fine of not less than $15,000.00, or both such fine and imprisonment. Each act or omission in violation of this subsection shall constitute a separate offense.
OCGA § 16-12-37