Today, March 20th, is the International Day of Happiness. According to the ninth World Happiness Report, published yesterday, Finland is once again on the top of the happiness rankings (for a fourth year running). It is followed by the usual culprits: Iceland, Denmark, Switzerland and the Netherlands. As usual, the happiest countries in the world are predominantly in Western Europe. New Zealand is the only non-European country in this year’s top 10 (9th place). Canada is no longer in the top 10 (15th place), whereas Germany has made it to the top 10 of the happiest countries in the world. My home country, Greece, is in the 51st place (better than last year’s…