The population of the world is aging, creating new and distinct burdens and opportunities for countries.

But which countries provide the best environment for retirees? Natixis Global Asset Management tracks developed countries to see which produce the best retirement scenarios in its 2017 Global Retirement Index.

Natixis uses four categories to determine the state of retirement health across the globe: the material means to live comfortably in retirement; access to quality financial services to help preserve savings value and maximize income; access to quality health services; and a clean and safe environment.

Looking at the results by region, eight of the top 25 performing countries are located in Western Europe. Some countries improved their positions, while others slipped down on the scale from previous year’s rankings. The biggest declines among the top 25 are the United States and Austria. The United States slipped four spots because of declines in the income equality, happiness and life expectancy indicators, while Austria declined mostly due to financial instability.

Following are the 25 countries—from 43 developed countries considered—in ascending order that Natixis found are providing good retirement conditions.

25. Slovak Republic

 

The Slovak Republic moved into the top 25 ranking this year after missing out by just one spot last year. Driving the higher overall score were improvements within the categories of material well-being and quality of life.