Question: When did Thailand host the international 80kg welterweight rugby tournament?
About the article "Thailand", section "Sports".

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Thailand played their first ever rugby international in 1970.
Thailand first attempted to qualify for a World Cup in 1999 when Wales was the host.
They competed in Round 1 of the Asia qualifying tournament, winning and losing one match; seeing them finish second in the final standings, and knocking them out of contention to qualify.
For the 2003 Rugby World Cup in Australia, Thailand participated in Pool B of the Asia qualification tournament, but finished third in the standings after losing both of their fixtures.
Thailand attempted to qualify for the 2007 Rugby World Cup in France as well, and were grouped with Sri Lanka and Singapore.
However they lost both of their fixtures and did not advance to the next stage.
Within the Asian Five Nations, they competed in the inaugural 2008 HSBC Asian Five Nations in Division Two.
After winning all their matches, they will play in the First Division for the 2009 event, taking the place of the Chinese team, (which withdrew due to visa problems) Sri Lanka who finished last stay in Division One because of this. 
Muay Thai (Thai: มวยไทย, RTGS: Muai Thai, , lit.
"Thai boxing") is a native form of kickboxing and Thailand's national sport.
It incorporates kicks, punches, knees and elbow strikes in a ring with gloves similar to those used in Western boxing and this has led to Thailand gaining medals at the Olympic Games in boxing.
Takraw (Thai: ตะกร้อ) is a sport native to Thailand, which the players hit a rattan ball and only be allowed to use their feet, knees, chest and head to touch the ball.
Sepak takraw is a form of this sport which appears in volleyball style, the players must volley a ball over a net and force it to hit the ground on opponent's side.
It is a popular in other countries in Southeast Asia also.
A rather similar game but played only with the feet is Buka ball.
Rugby is also a growing sport in Thailand with the Thailand national rugby union team rising to be ranked 61st in the world.
Thailand became the first country in the world to host an international 80 kg welterweight rugby tournament in 2005.
The national domestic Thailand Rugby Union (TRU) competition includes several universities and services teams such as Chulalongkorn University, Mahasarakham University, Kasetsart University, Prince of Songkla University, Thammasat University, Rangsit University, the Thai Police, the Thai Army, the Thai Navy and the Royal Thai Air Force.
Local sports clubs which also compete in the TRU include the British Club of Bangkok, the Southerners Sports Club (Bangkok) and the Royal Bangkok Sports Club.
Thailand has been called the Golf Capital of Asia as it is a popular destination for golf.
The country attracts a large number of golfers from Japan, Korea, Singapore, South Africa and Western countries who come to play golf in Thailand every year.
The growing popularity of golf, especially among the middle classes and expats, is evident since there are more than 200 world-class golf courses nationwide, and some of them are chosen to host PGA and LPGA tournaments, such as Amata Spring Country Club, Alpine Golf & Sports Club, Thai Country Club and Black Mountain Golf Club.
Basketball is also a growing sport in Thailand, especially on the professional sports club level.
The Chang Thailand Slammers won the 2011 Asean Basketball League Championship.
The Thailand national basketball team had its most successful year at the 1966 Asian Games where it won the silver medal.
Other sports in Thailand are slowly growing as the country develops its sporting infrastructure.
The success in sports like weightlifting and Taekwondo at the last two Summer Olympic Games has demonstrated that boxing is no longer the only medal chance for Thailand.
 Combat Wrestling *80kg Class Tournament (2005)