Based on the HK Fact Sheet on Jan 2011
We divide the age group starting 0-14, 15-24, 25-34, 35-44, 45-54, 55-64 and 65 above
Here are the population
0-14 = 12.5%
15-24 = 12.8%
25-34 = 15.4%
35-44 = 16.8%
45-54 = 18.3%
55-64 = 11.6%
65 & over = 12.8%
The upward trend starts from the age group 0-14 to 45-54 and drop at the retirement age 55-64. Who need a larger flat from 2 bed rooms to 3 bed rooms in next 10 years? Probably the age group 25-34 & 35-44 are alike.