From: A longitudinal study of tobacco use among American Indian and Alaska Native tribal college students
 | Year in College |  | |||
---|---|---|---|---|---|
Cohort Year | Freshman | Sophomore | Junior | Senior | TOTAL |
2009 - 10 | 250* | Â | Â | Â | 250 |
2010 - 11 | 250 | 137** | Â | Â | 387 |
2011 - 12 | 250 | 137 | 96*** | Â | 483 |
2012 - 13 | 250 | 137 | 96 | 67 | 550 |
2013 - 14 | 250 | 137 | 96 | 67 | 550 |
TOTAL | Â | Â | Â | Â | 2,220 |