A new study comparing indexes of welfare with GDP levels shows that the economic growth of a country does not guarantee the happiness of the population. For example, in 2012 the GDP per capita in Russia was $23,500, or twice that of Brazil. But it didn’t impress the Russians. According to the index of happiness, Brazil was happier, despite a lower per capita GDP of $11,900. Vietnam's happiness level was the closest to Russia's, although per capital GCP level in Vietnam came in lower than that of Brazil at $3,600. The study showed that the sense of happiness among citizens of different countries reached a maximum when the GDP per capita was $36,000. Anything above that did not necessarily bring more joy. Experts explained the paradox by suggesting that a favorable economic situation in the country led to higher expectations from citizens, but a lack of implementation of these expectations caused disappointment.