It is the largest annual survey of countries' reputations, the institute says.
"When people perceive a country positively based on their direct experiences and through the lens of others, that translates into increased tourism dollars," says a managing partner of the institute, Fernando Prado. "That's because a country's reputation dictates supportive behaviours such as the willingness of people to visit that country."
Its 2015 rankings report notes that the largest and most powerful countries are not necessarily the ones with the best reputations, "but the happiest ones do have better reputations ... and the ones that are peaceful ... and also the ones with less corruption".
It says New Zealand, ranked ninth in the United Nations' 2015 World Happiness Report, was at the "more peaceful" end of the scale in the Institute for Economics and Peace 2015 Global Peace Index, and was ranked second cleanest, behind only Denmark, in the 2015 Corruption Perceptions Index of Transparency International.
Rankings
1 Canada
2 Norway
3 Sweden
4 Switzerland
5 Australia
6 Finland
7 New Zealand
8 Denmark
9 Netherlands
10 Belgium.