The south-east Asian country makes Titan’s top 20 for the first time, while there were also significant gains for Uzbekistan, Costa Rica and a resurgent Egypt.
Maintaining the top spot in the list was the US, followed by Canada, which traded places with Italy. India remains fourth and South Africa fifth.
Austria has surged into sixth spot with the country set to play host next year to the traditional Oberammergau passion play, staged every 10 years.
Vietnam rose from ninth to seventh, while both Japan and China slipped back, Japan from sixth to eighth and China from eighth to ninth. Australia maintained its spot in 10th.
