eTable 9. Sample size, prevalence, estimated prevalence with 95% confidence intervals for cannabis use by survey year and sex.

	Men				Women
Survey year	N	Prevalence	Est. prev.	95% CI	N	Prevalence	Est. prev.	95% CI
1995	3557	6.5	5.4	[4.8; 5.9]	4275	2,3	2,4	[2.1; 2.8]
1997	3727	5.4	5.9	[5.4; 6.3]	4293	2,7	2,7	[2.4; 3.0]
2000	3657	7.6	6.4	[6.0; 6.8]	4428	4,4	3,1	[2.8; 3.4]
2003	3585	9.1	6.9	[6.6; 7.3]	4416	4,7	3,5	[3.2; 3.7]
2006	3089	7.0	7.5	[7.2; 7.9]	3907	3,1	3,9	[3.7; 4.1]
2009	3234	7.0	8.2	[7.8; 8.5]	4089	3,4	4,4	[4.2; 4.6]
2012	3422	6.7	8.9	[8.4; 9.3]	4549	3,4	4,9	[4.6; 5.2]
2015	3701	8.7	9.6	[9.0; 10.2]	4551	5,3	5,5	[5.1; 5.9]
2018	3736	10,3	10,4	[9.6; 11.1]	4572	6,2	6,2	[5.6; 6.7]

N. Sample size; Est. prev.. mean estimated prevalence; 95% CI. 95% confidence interval