Read this and answer the question. If the question is unanswerable, say "unanswerable".

The budget of the city for 2013 was 7.6 billion, of which 5.4 billion went for city administration, while 2.2 billion went for investment. The largest part of the budget (38 percent) went for public housing and urbanism projects; 15 percent for roads and transport; 8 percent for schools (which are mostly financed by the state budget); 5 percent for parks and gardens; and 4 percent for culture. The main source of income for the city is direct taxes (35 percent), supplemented by a 13-percent real estate tax; 19 percent of the budget comes in a transfer from the national government.

What percentage of the budget is allocated for schools?
8