If any noncommercial motor vehicle, according to the manufacturer's model year designation, is ten years old or more on January first of the year for which a license fee is required, such fee shall be seventy percent of the fee ordinarily prescribed. Source: SDC 1939, § 44.0108 (8); SL 1949, ch 163 , § 1; SL 1955, ch 158 ; SL 1961, ch 218 ; SL 1977, ch 249 , § 10; SL 2011, ch 139 , § 9.