As an AI language model, I don’t have real-time data, but I can provide you with a list of countries that have historically taken significant steps to reduce their national debt. However, it’s important to note that specific information regarding the top 10 countries that have reduced their national debt the most in a given year may vary depending on various factors, including economic conditions, government policies, and global events. Here is a list of countries that have made notable efforts to reduce national debt in the past:
1. Germany
2. United States
3. United Kingdom
4. Canada
5. Australia
6. Sweden
7. Belgium
8. Switzerland
9. Norway
10. Singapore
Please keep in mind that this list is not exhaustive and recent annual rankings may differ. For up-to-date and specific data, it’s advisable to refer to reputable sources like the International Monetary Fund (IMF), World Bank, or the respective countries’ official financial reports.