During the years 1994 to 2002, the percent of college freshmen whose high school grade average was A or A+ can be approximated by P(t) = 17.77e.0305t where t = 0 corresponds to the year 1994, t = 1 corresponds to the year 1995, and so on. Based on this model, in what year did 20% of the student class have an A or A+ grade average?