At ECOFIN meetings during the past year the points raised by the Deputy were debated. I supported the idea of a carbon tax. Environmental economists, and some international environmentalists, are concerned that the manner in which GNP is compiled does not reflect environmental considerations. If crime and other areas are considered it would be difficult to compile a set of national accounts. There is a theory that if we use what they are calling in Europe, satellite accounts, rather than compiling these figures in GDP and GNP, people will be able to see, for example, the cost of a polluted river, how it would damage the tourist industry, and, consequently GNP. I would not have any difficulty with such theory but if we took it as a model for crime, welfare and other matters, we would never have the national accounts. It is difficult enough to prepare them at the moment. There is considerable debate in Europe about using the proposed model for environmental matters. Our traditional position has been to use the UN Convention which is the European model of GNP-GDP. This can only be changed collectively, otherwise it would not be possible to base our criteria on the Maastricht guidelines and on what international markets seek. I do not see a great difficulty in trying to move in the direction suggested.