Domains
| Year | 1981 | 1986 | 1991 | 1996 | 1997 | 1998 | 1999 | 2000 |
| Ratio | 1125 | 1050 | 982 | 920 | 910 | 898 | 890 | 877 |
| Year | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 |
| Ratio | 885 | 905 | 911 | 895 | 875 | 856 | 844 | 836 |
| Year | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 |
| Ratio | 837 | 839 | 844 | 846 | 852 | 865 | 873 | 883 |
| Year | 2017 | 2018 | ||||||
| Ratio | 897 | 906 |
Operational Definitions
The ratio of number of males to that of females aged 20-29, based on mid-year estimate of population.
Footnote
All figures are collected from Census and Statistics Department since 1999.
