Grade |
|||
Year |
8th |
10th |
12th |
|
1975
|
na
|
na
|
87.80%
|
|
1976
|
na
|
na
|
87.40%
|
|
1977
|
na
|
na
|
87.90%
|
|
1978
|
na
|
na
|
87.80%
|
|
1979
|
na
|
na
|
90.10%
|
|
1980
|
na
|
na
|
89.00%
|
|
1981
|
na
|
na
|
89.20%
|
|
1982
|
na
|
na
|
88.50%
|
|
1983
|
na
|
na
|
86.20%
|
|
1984
|
na
|
na
|
84.60%
|
|
1985
|
na
|
na
|
85.50%
|
|
1986
|
na
|
na
|
85.20%
|
|
1987
|
na
|
na
|
84.80%
|
|
1988
|
na
|
na
|
85.00%
|
|
1989
|
na
|
na
|
84.30%
|
|
1990
|
na
|
na
|
84.40%
|
|
1991
|
na
|
na
|
83.30%
|
|
1992
|
42.30%
|
65.20%
|
82.70%
|
|
1993
|
43.80%
|
68.40%
|
83.00%
|
|
1994
|
49.90%
|
75.00%
|
85.50%
|
|
1995
|
52.40%
|
78.10%
|
88.50%
|
|
1996
|
54.80%
|
81.10%
|
88.70%
|
|
1997
|
54.20%
|
80.50%
|
89.60%
|
|
1998
|
50.60%
|
77.90%
|
90.40%
|
|
1999
|
48.40%
|
78.20%
|
88.90%
|
|
2000
|
47.00%
|
77.70%
|
88.50%
|
|
2001
|
48.10%
|
77.40%
|
88.50%
|
|
2002
|
46.60%
|
75.90%
|
87.20%
|
|
2003
|
44.80%
|
73.90%
|
87.10%
|
|
2004
|
41.00%
|
73.30%
|
85.80%
|
|
2005
|
41.10%
|
72.60%
|
85.60%
|
|
2006
|
39.60%
|
70.70%
|
84.90%
|
Source: The Monitoring the Future Survey. University of Michigan.