Figure 1 shows results for adolescents (12-17 year olds; Row 1), young adults (18-25 year olds; Row 2) and other adults (those 26+ years of age; Row 3). Figure 1.A.i-iii (Great risk): The perception of “great-risk” of smoking marijuana 1-2 times per week decreased significantly in Colorado for adolescents (56% in 2005-6, 47.7% in 2007-8, 37.9% in 2009-10 and 36.4% in 2010-11), young adults (24.6% in 2007-8 to 16.1% in 2010-11) and other adults (44.9% in 2007-8 to 31.1% in 2009-10 and 31.4% in 2010-11). Coloradans of all three age groups were significantly less likely than individuals from NMMS to perceive “great-risk” for all years studied except for adolescents in years 2003-4 and 2005-6. Figure 1.B.i-iii (Fairly/very easy to get): Within Colorado the percentage of other adults reporting that marijuana was fairly or very easy to obtain increased significantly between 2007-8 and 2010-11 (from 56.7% to 64.6%). Coloradans of all three age groups perceived greater marijuana availability (fairly/very easy to obtain) than NMMS for all years studied, except for adolescents in 2003-04 and 2005-6 and other adults in 2005-6 and
