Table 1.

Tobacco consumption based on cigarette taxes and on survey data, 1991–2006.

Year	Cigarettes consumed based on tax (millions of packs)	Cigarette consumption based on survey data (millions of packs)	Percent change in consumption by year	Difference in tax and survey estimates of cigarettes consumed (millions of packs)	Net difference as percent of legal sales
1991	1,935	1,313	-	622	32%
1996	2,440	1,600	21.9	840	34%
1999	1,790	1,263	−21.1	528	29%
2001	1,713	1,101	−12.8	612	36%
2004	2,115	972	−11.7	1,143	54%
2006	1,801	862	−11.3	938	52%
Average	1,966	1,185		781	40%