According to a new report by CMHC, economic worries and a declining real estate market has some would-be home buyers staying put in rental housing, resulting in sharply declining rental apartment vacancy rates in Toronto. The city's vacancy rate fell to 2.1 per cent this year, compared with 3.2 per cent last year. The drop comes on the heels of a Bank of Canada warning yesterday that some Canadians may lose their homes if the economic crisis gets worse.