This was done by comparing the survey entries for income with figures from an estimate of household income and spending taken from each country's System of National Accounts (SNA), prepared for this purpose using official information. In most countries, household income included the imputed rental value of owner-occupied dwellings. The period 2002-2008 was also characterized by a reduction in the total number of poor and indigent persons (41 million and 26 million, respectively).