人口加倍時間[PDT=70/增長率]
| 年份 | 1981 | 1986 | 1991 | 1997 | 1998 | 1999 | 2000 | 2001 |
| 年 | 39 | 58 | 64 | 87.50 | 70 | 87.50 | 63.64 | 100 |
| 年份 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 |
| 年 | 87.50 | 116.67 | 140 | 116.67 | 70 | 140 | 175 | 140 |
| 年份 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 |
| 年 | 87.50 | 87.50 | 77.78 | 116.67 | 116.67 | 90.08 | 77.78 | 140 |
| 年份 | 2018 | |||||||
| 年 | 70 |
操作定義
The time taken for population size of Hong Kong to double its current size. They are obtained by dividing 70 by the rate of increase. (Prof. Estes)
備註
All figures are collected from Census and Statistics Department since 1999.
