I'm not sure that I can give that evaluation. I don't know what percentage of tax is collected automatically by deductions at source, but for a huge portion of taxes, the agency itself doesn't have to make any real collection effort. Obviously they have to manage the money coming in, so they might have comparators with other national tax administrations to see how they do that, but we can't give that kind of information.
On June 19th, 2006. See this statement in context.