Elderly to make up more than 40 percent of six countries by 2050

(Bloomberg Business) — Millennials in Japan, Korea, Greece, Italy, Portugal and Spain beware.

By 2050, you will have entered or joined the ranks of the world’s super-aging economies, where more than 40 percent of the population will likely be over 60, according to the latest United Nationsfigures. That places a burden on upcoming generations paying for a welfare system strangling economies with sluggish growth and mounting debt.

HelpAge International, a non-government organization based in New York that typically favors government-based health programs, compiled a 2015 ranking of where the elderly have the best quality of life. The ratings are based on things like pension coverage, health facilities and access to public transport.

In the six countries aging most rapidly, only Japan — already the world’s oldest population — seems to be thinking of how to care for its elderly. Greece and South Korea are the worst places to live for people in their 60s.

The 28-page report highlights how the 2008 financial crisis has had a devastating impact on the oldest generations, especially in hard-hit Southern Europe.