It is difficult to find the most up-to-date information on the top 10 countries with the largest numbers of gamblers per capita. However, I can provide you with a list based on available data from recent years. Please note that the rankings might change over time.
1. Australia
2. Singapore
3. Ireland
4. Canada
5. Finland
6. Italy
7. New Zealand
8. United States
9. Norway
10. United Kingdom
Please keep in mind that gambling habits and regulations differ across countries, and obtaining precise per capita figures can be challenging.