Table I.

Smoking data from 2000 National Survey on Drug Use and Health (NSDUH) The data show the percentages of people in different states.

Age	NS	EX	SS	RS	QU	$\overline{\mathit{\text{SS}}}$	$\overline{\mathit{\text{QU}}}$
15	63.65	12.81	14.74	7.84	0.66	8.61	0.42
16	53.10	15.57	17.69	12.45	0.88	12.36	0.40
17	46.95	16.56	17.00	17.99	1.18	12.83	0.54
18	41.20	16.11	16.40	24.46	1.64	11.24	0.87
19	35.55	15.89	15.89	30.50	2.08	11.83	1.34
20	31.75	15.09	16.05	34.69	2.36	12.29	1.51
21	30.35	13.69	17.20	35.77	2.94	13.05	1.73