A major sporting event is the "Independence Day Sports Festival" held annually on 1 October. The most important sports event within the country is arguably the Tuvalu Games, which are held yearly since 2008. Tuvalu first participated in the Pacific Games in 1978 and in the Commonwealth Games in 1998, when a weightlifter attended the games held at Kuala Lumpur, Malaysia. Two table tennis players attended the 2002 Commonwealth Games in Manchester, England; Tuvalu entered competitors in shooting, table tennis and weightlifting at the 2006 Commonwealth Games in Melbourne, Australia; three athletes participated in the 2010 Commonwealth Games in Delhi, India, entering the discus, shot put and weightlifting events; and a team of 3 weightlifters and 2 table tennis players attended the 2014 Commonwealth Games in Glasgow. Tuvaluan athletes have also participated in the men's and women's 100 metre sprints at the World Championships in Athletics from 2009.

Answer this question, if possible (if impossible, reply "unanswerable"): In what year did Tuvalu first appear in the Commonwealth Games?
1998