Table 1.

Prevalence of smoking by year of Medical Expenditure Panel Survey data collection (a) and decade of age (b)

(a) Smoking status by year of medical expenditure
	2011	2012	2013	2014	2015	n
Current	7.7%	8.7%	8.4%	7.9%	7.3%	19 716 719
Never	83.7%	81.6%	81.6%	81.6%	82.4%	206 862 703
Former	8.6%	9.7%	10.0%	10.5%	10.3%	23 900 571

(b) Smoking status by decade of life
	18–30	31–40	41–50	51–60	61–70	70+
Current	6.8%	9.8%	9.2%	9.6%	7.4%	4.4%
Never	90.5%	83.2%	83.8%	79.8%	76.8%	73.3%
Former	2.7%	7.0%	7.1%	10.6%	15.7%	22.3%

Average participants in each category were developed using survey weights.