We see that top revenue-generating countries like the United Kingdom, Netherlands, and Ireland don't see a big uplift over the years, as the markets have become stable and are showing steady growth year on year.
South-East Asian countries like Japan, Australia, and Hong Kong see a massive uptick in demand and see a big increase in revenue generated from these markets.
Countries like the USA, Greece, Denmark, and UAE were worst impacted by the 2008 recession, and the long-term impact has reduced purchasing capacity of customers, hence the dip in revenue generated.