I think it's difficult, because when people are deciding where they want to live, they're not only thinking about how much tax they get but also about what the cost of living is. One thing that can happen in countries where people pay somewhat more tax is that they also get somewhat more benefits. For example, European countries pay higher taxes, but they all have free medical care. They all have almost free higher education. So you have to look at both the taxes that are paid and also the state services that they receive in exchange.
On April 14th, 2008. See this statement in context.