1976 | 1977 | 1978 | 1979 | 1980 | 1981 | 1982 | 1983 | 1984 | 1985 | 1986 | 1987 | 1988 | 1989 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2020 2021 Change |
2016 2021 Change |
Proportional Change |
Peak year 2021 Change |
Proportional Change |
Low year 2021 Change |
Proportional Change |
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Lifetime | 8th Grade | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 70.1 | 69.3 | 55.7 | 55.8 | 54.5 | 55.3 | 53.8 | 52.5 | 52.1 | 51.7 | 50.5 | 47.0 | 45.5 | 43.9 | 41.0 | 40.5 | 38.9 | 38.9 | 36.6 | 35.8 | 33.1 | 29.5 | 27.8 | 26.8 | 26.1 | 22.8 | 23.1 | 23.5 | 24.5 | 25.6 | 21.7 | | | -3.9 | | | -1.1 | -4.7 | | | -34.1*** | -61.2 | | | 0.0 | 0.0 |
10th Grade | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 83.8 | 82.3 | 71.6 | 71.1 | 70.5 | 71.8 | 72.0 | 69.8 | 70.6 | 71.4 | 70.1 | 66.9 | 66.0 | 64.2 | 63.2 | 61.5 | 61.7 | 58.3 | 59.1 | 58.2 | 56.0 | 54.0 | 52.1 | 49.3 | 47.1 | 43.4 | 42.2 | 43.0 | 43.1 | 46.4 | 34.7 | | | -11.6*** | | | -8.7*** | -20.0 | | | -37.3*** | -51.8 | | | 0.0 | 0.0 | |
12th Grade | 91.9 | 92.5 | 93.1 | 93.0 | 93.2 | 92.6 | 92.8 | 92.6 | 92.6 | 92.2 | 91.3 | 92.2 | 92.0 | 90.7 | 89.5 | 88.0 | 87.5 | 80.0 | 80.4 | 80.7 | 79.2 | 81.7 | 81.4 | 80.0 | 80.3 | 79.7 | 78.4 | 76.6 | 76.8 | 75.1 | 72.7 | 72.2 | 71.9 | 72.3 | 71.0 | 70.0 | 69.4 | 68.2 | 66.0 | 64.0 | 61.2 | 61.5 | 58.5 | 58.5 | 61.5 | 54.1 | | | -7.4* | | | -7.0** | -11.5 | | | -27.6*** | -33.8 | | | 0.0 | 0.0 | |
Last 12 Months | 8th Grade | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 54.0 | 53.7 | 45.4 | 46.8 | 45.3 | 46.5 | 45.5 | 43.7 | 43.5 | 43.1 | 41.9 | 38.7 | 37.2 | 36.7 | 33.9 | 33.6 | 31.8 | 32.1 | 30.3 | 29.3 | 26.9 | 23.6 | 22.1 | 20.8 | 21.0 | 17.6 | 18.2 | 18.7 | 19.3 | 20.5 | 17.2 | | | -3.2 | | | -0.4 | -2.2 | | | -29.6*** | -63.2 | | | 0.0 | 0.0 |
10th Grade | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 72.3 | 70.2 | 63.4 | 63.9 | 63.5 | 65.0 | 65.2 | 62.7 | 63.7 | 65.3 | 63.5 | 60.0 | 59.3 | 58.2 | 56.7 | 55.8 | 56.3 | 52.5 | 52.8 | 52.1 | 49.8 | 48.5 | 47.1 | 44.0 | 41.9 | 38.3 | 37.7 | 37.8 | 37.7 | 40.7 | 28.5 | | | -12.2*** | | | -9.8*** | -25.7 | | | -36.8*** | -56.3 | | | 0.0 | 0.0 | |
12th Grade | 85.7 | 87.0 | 87.7 | 88.1 | 87.9 | 87.0 | 86.8 | 87.3 | 86.0 | 85.6 | 84.5 | 85.7 | 85.3 | 82.7 | 80.6 | 77.7 | 76.8 | 72.7 | 73.0 | 73.7 | 72.5 | 74.8 | 74.3 | 73.8 | 73.2 | 73.3 | 71.5 | 70.1 | 70.6 | 68.6 | 66.5 | 66.4 | 65.5 | 66.2 | 65.2 | 63.5 | 63.5 | 62.0 | 60.2 | 58.2 | 55.6 | 55.7 | 53.3 | 52.1 | 55.3 | 46.5 | | | -8.8** | | | -9.1*** | -16.4 | | | -28.3*** | -37.8 | | | 0.0 | 0.0 | |
Last 30 Days | 8th Grade | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 25.1 | 26.1 | 24.3 | 25.5 | 24.6 | 26.2 | 24.5 | 23.0 | 24.0 | 22.4 | 21.5 | 19.6 | 19.7 | 18.6 | 17.1 | 17.2 | 15.9 | 15.9 | 14.9 | 13.8 | 12.7 | 11.0 | 10.2 | 9.0 | 9.7 | 7.3 | 8.0 | 8.2 | 7.9 | 9.9 | 7.3 | | | -2.6* | | | 0.1 | 0.9 | | | -18.9*** | -72.1 | | | 0.1 | 0.9 |
10th Grade | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 42.8 | 39.9 | 38.2 | 39.2 | 38.8 | 40.4 | 40.1 | 38.8 | 40.0 | 41.0 | 39.0 | 35.4 | 35.4 | 35.2 | 33.2 | 33.8 | 33.4 | 28.8 | 30.4 | 28.9 | 27.2 | 27.6 | 25.7 | 23.5 | 21.5 | 19.9 | 19.7 | 18.6 | 18.4 | 20.3 | 13.1 | | | -7.2*** | | | -6.9*** | -34.4 | | | -27.9*** | -68.1 | | | 0.0 | 0.0 | |
12th Grade | 68.3 | 71.2 | 72.1 | 71.8 | 72.0 | 70.7 | 69.7 | 69.4 | 67.2 | 65.9 | 65.3 | 66.4 | 63.9 | 60.0 | 57.1 | 54.0 | 51.3 | 48.6 | 50.1 | 51.3 | 50.8 | 52.7 | 52.0 | 51.0 | 50.0 | 49.8 | 48.6 | 47.5 | 48.0 | 47.0 | 45.3 | 44.4 | 43.1 | 43.5 | 41.2 | 40.0 | 41.5 | 39.2 | 37.4 | 35.3 | 33.2 | 33.2 | 30.2 | 29.3 | 33.6 | 25.8 | | | -7.7* | | | -7.4** | -22.2 | | | -26.8*** | -50.9 | | | 0.0 | 0.0 | |
Daily | 8th Grade | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 0.5 | 0.6 | 1.0 | 1.0 | 0.7 | 1.0 | 0.8 | 0.9 | 1.0 | 0.8 | 0.9 | 0.7 | 0.8 | 0.6 | 0.5 | 0.5 | 0.6 | 0.7 | 0.5 | 0.5 | 0.4 | 0.3 | 0.3 | 0.3 | 0.2 | 0.2 | 0.2 | 0.1 | 0.2 | 0.4 | 0.3 | | | -0.1 | | | 0.1 | 54.0 | | | -0.8*** | -73.3 | | | 0.1 | 108.8 |
10th Grade | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1.3 | 1.2 | 1.8 | 1.7 | 1.7 | 1.6 | 1.7 | 1.9 | 1.9 | 1.8 | 1.9 | 1.8 | 1.5 | 1.3 | 1.3 | 1.4 | 1.4 | 1.0 | 1.1 | 1.1 | 0.8 | 1.0 | 0.9 | 0.8 | 0.5 | 0.5 | 0.6 | 0.5 | 0.6 | 1.0 | 0.4 | | | -0.5 | | | -0.1 | -18.6 | | | -1.5*** | -77.0 | | | 0.0 | 0.0 | |
12th Grade | 5.6 | 6.1 | 5.7 | 6.9 | 6.0 | 6.0 | 5.7 | 5.5 | 4.8 | 5.0 | 4.8 | 4.8 | 4.2 | 4.2 | 3.7 | 3.6 | 3.4 | 3.4 | 2.9 | 3.5 | 3.7 | 3.9 | 3.9 | 3.4 | 2.9 | 3.6 | 3.5 | 3.2 | 2.8 | 3.1 | 3.0 | 3.1 | 2.8 | 2.5 | 2.7 | 2.1 | 2.5 | 2.2 | 1.9 | 1.9 | 1.3 | 1.6 | 1.2 | 1.7 | 2.7 | 0.9 | | | -1.8* | | | -0.4 | -31.0 | | | -3.0*** | -76.5 | | | 0.0 | 0.0 | |
Binge Drinking | 8th Grade | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 10.9 | 11.3 | 11.3 | 12.1 | 12.3 | 13.3 | 12.3 | 11.5 | 13.1 | 11.7 | 11.0 | 10.3 | 9.8 | 9.4 | 8.4 | 8.7 | 8.3 | 8.1 | 7.8 | 7.2 | 6.4 | 5.1 | 5.1 | 4.1 | 4.6 | 3.4 | 3.7 | 3.7 | 3.8 | 4.5 | 2.8 | | | -1.8* | | | -0.6 | -19.0 | | | -10.6*** | -79.4 | | | 0.0 | 0.0 |
10th Grade | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 21.0 | 19.1 | 21.0 | 21.9 | 22.0 | 22.8 | 23.1 | 22.4 | 23.5 | 24.1 | 22.8 | 20.3 | 20.0 | 19.9 | 19.0 | 19.9 | 19.6 | 16.0 | 17.5 | 16.3 | 14.7 | 15.6 | 13.7 | 12.6 | 10.9 | 9.7 | 9.8 | 8.7 | 8.5 | 9.6 | 5.9 | | | -3.7*** | | | -3.9*** | -39.8 | | | -18.3*** | -75.7 | | | 0.0 | 0.0 | |
12th Grade | 37.0 | 39.4 | 40.3 | 41.2 | 41.2 | 41.4 | 40.5 | 40.8 | 38.7 | 36.7 | 36.8 | 37.5 | 34.7 | 33.0 | 32.2 | 29.8 | 27.9 | 27.5 | 28.2 | 29.8 | 30.2 | 31.3 | 31.5 | 30.8 | 30.0 | 29.7 | 28.6 | 27.9 | 29.2 | 27.1 | 25.4 | 25.9 | 24.6 | 25.2 | 23.2 | 21.6 | 23.7 | 22.1 | 19.4 | 17.2 | 15.5 | 16.6 | 13.8 | 14.6 | 16.8 | 11.8 | | | -5.0* | | | -3.7** | -24.0 | | | -19.7*** | -62.5 | | | 0.0 | 0.0 |