Information from the Statistics and Census Service (DSEC) indicated that the population of Macao was estimated at 542,200 as at 31 December 2009, down by 7,000 or 1.3% year-on-year, which was attributable to a substantial decrease of non-resident workers. As regards gender structure of the population, 51.8% were female and 48.2% were male. In terms of age structure, the youth population (aged 0-14) accounted for 12.7%, the adult population (aged 15-64) and the elderly population (aged 65 and over) shared 79.5% and 7.7% respectively. In comparison with 2008, the proportion of the youth and adult population decreased by 0.1 and 0.5 percentage point respectively, while that of the elderly population increased by 0.5 percentage point. In the fourth quarter of 2009, there were 1,384 live births and 431 mortality cases. For the whole year of 2009, total number of live births went up by 1.0% year-on-year to 4,764; meanwhile, gender ratio at birth was 108.9, corresponding to 108.9 male babies per 100 female babies. Number of mortality cases totalled 1,664 in 2009, down by 5.2% year-on-year, with the top three underlying causes of death being Neoplasms, Diseases of the Circulatory System and Diseases of the Respiratory System. The Health Bureau received 2,327 cases of Notifiable Diseases in the fourth quarter of 2009, consisting mainly of Hand, foot and mouth diseases (601 cases), Influenza (593 cases) and Influenza A/H1N1 (Swine flu) (569 cases). In addition, 841 cases of marriage registration were recorded in the fourth quarter of 2009, with the annual total rising by 9.3% year-on-year to 3,035 cases; besides, median age of first marriage was 26.0 for female and 28.1 for male. In the fourth quarter of 2009, there were 780 Chinese immigrants moving to Macao with One-way Exit Permit, bringing the annual total to 3,121, with 67.3% coming from the Guangdong Province. Meanwhile, 292 illegal immigrants were repatriated in the fourth quarter and the total number for 2009 increased by 7.0% year-on-year to 1,524. Number of non-resident workers stood at 74,905 at the end of 2009, down significantly by 17,256 year-on-year; moreover, a total of 9,489 individuals were authorized to reside in Macao in 2009, up by 1,572 year-on-year. In 2009, total number of non-institutionalized households rose slightly by 0.3% year-on-year to 178,000 households.
