Spain’s capital, Madrid, covers 0.12% of the nation’s territory but is home to 7% of the total population. The city’s economy is dominated by the services sector and is Spain’s financial, administrative and transport nerve centre. Madrid accounts for around one-tenth of Spain’s GDP. In terms of average annual income, Madrid is at the lower end of the scale among West European cities but ranks above all East European cities. Madrid ranks 12th overall in the European Green City Index, with a score of 67.08 out of 100. Among larger cities Madrid occupies a middle ranking, below Berlin, Paris and London but above Rome, Athens and Istanbul. Its ranking is buoyed by good performances in carbon dioxide (CO2) emissions and water. While sustainable development is newer to Madrid than to many of its West European  neighbours, the city has set ambitious targets to catch up.