32 The weight by age group of the number of houses built and dwelled within the past five years, changed during the period 1998-2003 as follows: people in their 20s: 6.3%rarr5.4%, people in their 30s: 35.7%rarr37.5%, people in their 40s: 30.8%rarr27.1%, people 50 years of age or older: 27.0%rarr29.7%.