In 2006, there were 2,381,500 households of average size 2.1 people. Forty percent of households consisted of single person, 32 percent two and 28 percent three or more. There were 1.2 million residential buildings in Finland and the average residential space was 38 square metres per person. The average residential property (without land) cost 1,187 euro per square metre and residential land on 8.6 euro per square metre. Consumer energy prices were 8-12 euro cent per kilowatt hour. 74 percent of households had a car. There were 2.5 million cars and 0.4 other vehicles. Around 92 percent have mobile phones and 58 percent List of countries by number of Internet users. The average total household consumption was 20,000 euro, out of which housing at around 5500 euro, transport at around 3000 euro, food and beverages excluding alcoholic at around 2500 euro, recreation and culture at around 2000 euro. Upper-level white-collar households (409,653) consumed an average 27,456 euro, lower-level white-collar households (394,313) 20,935 euro, and blue-collar households (471,370) 19,415 euro.. How many more euro did upper-level white-collar households consume compared to lower-level white-collar households?