The survey was conducted in August 2006 using a stratified two-stage sampling, mailed to 32,000 adult men and women nationwide.  JT collected 18,595 (58.0 percent) valid responses of the total population surveyed.  The mail-in survey was introduced for the first time this year, while survey takers had re-collected the questionnaires until last year.

Sample age ranges

Percentages: Proportion of sample group
Figures (bottom right of each box): Sample size (number of valid respondents)

	20-29	30-39	40-49	50-59	60+	Total
Men	16.5 percent 1,597	15.4 percent 1,490	15.3 percent 1,485	19.4 percent 1,877	33.4 percent 3,241	100 percent 9,690
Women	10.5 percent 939	18.1 percent 1,612	16.3 percent 1,452	20.8 percent 1,852	34.3 percent 3,050	100 percent 8,905
Total	13.6 percent 2,536	16.7 percent 3,102	15.8 percent 2,937	20.1 percent 3,729	33.8 percent 6,291	100 percent 18,595