(2) For each qualified veteran or surviving spouse only one valid and allowable claim for an exemption on a homestead shall be permitted in any one assessment year. [Amended by 1955 c.248 §2; 1977 c.113 §1; 1981 c.530 §5; 1981 c.682 §3; 1982 s.s.1 c.33 §4; 1991 c.459 §54; 1995 c.610 §4; 1997 c.541 §115; 1999 c.221 §2; 2007 c.615 §3; 2009 c.41 §4; 2017 c.315 §7]