The highest level of revenue among middle-income countries, which could be taken as an ambitious general revenue target for these countries, happens to be the 1 percent of GDP that is the average for developed economies. Among high-income countries, a few—Canada, the United Kingdom, and the United States—raise more than 3 percent of GDP in annual property tax revenue, and a number raise over 2 percent of GDP (France, Israel, Japan, New Zealand). So a target of 2 to 3 percent of GDP seems a realistic long-term goal for high-income countries.