Coverage of the 2011 Service Sector Survey included Real Estate Management Services, Security Services, Cleaning Services, Advertising, and Conference & Exhibition Organising Services. There were 184 establishments operating in Real Estate Management Services in 2011, an increase of 7 year-on-year; number of persons engaged decreased by 2% to 4,803. Total Receipts (MOP 808 million) and Total Expenditure (MOP 700 million) decreased by 2% and 1% respectively. As a measure of the sectoral contribution to the economy, Gross Value Added decreased by 2% to MOP 468 million; Gross Fixed Capital Formation amounted to MOP 5 million, up by 11%. A total of 16 establishments were engaging in Security Services, an increase of 2 from 2010; number of persons engaged increased by 7% to 4,731. Total Receipts amounted to MOP 673 million, up by 26% year-on-year; Total Expenditure soared by 36% to MOP 636 million, of which Compensation of Employees amounted to MOP 494 million (78% of total). Gross Value Added (MOP 530 million) and Gross Fixed Capital Formation (MOP 4 million) increased by 14% and 76% respectively. Number of establishments operating in Cleaning Services, at 102, held stable as 2010; number of persons engaged increased by 10% to 3,839. Analysed by size of establishment, a total of 16 large establishments with 50 or more persons had 2,765 workers (72% of total). Total Receipts and Total Expenditure amounted to MOP 384 million and MOP 353 million, up by 13% and 16% respectively. Gross Value Added increased by 15% to MOP 307 million, while Gross Fixed Capital Formation decreased by 31% to MOP 2 million. There were 337 advertising agencies operating in 2011, up by 10 year-on-year, of which 301 were small size establishments with 5 or less persons. Number of persons engaged totalled 972, up by 12%, with only 67% being paid employees. Total Receipts rose by 7% year-on-year to MOP 369 million, of which receipts from Advertising Services amounted to MOP 252 million (68% of total). Total Expenditure edged up by 1% to MOP 307 million, with Purchases, Commission and Other Expenses amounted to MOP 163 million (53% of total). Gross Value Added (MOP 151 million) increased by 33% whereas Gross Fixed Capital Formation (MOP 7 million) decreased by 45%. A total of 26 establishments were operating in Conference & Exhibition Organising Services in 2011, up by 2 from a year earlier; number of persons engaged increased by 14% to 134. Total Receipts dropped by 34% year-on-year to MOP 133 million, with receipts from Provision of Conference & Exhibition Organising Services amounting to MOP 115 million. Total Expenditure decreased by 41% to MOP 112 million, of which Purchases, Commission and Other Expenses amounting to MOP 77 million. Gross Value Added (MOP 40 million) and Gross Fixed Capital Formation (MOP 5 million) surged by 38% and 251% respectively year-on-year.