ADMIT_TERM  ADMIT_TYPE  GRAD_YEAR
200708      F           2011
200708      F           2011
(...)       (...)       (...)

=COUNTIFS(data[ADMIT_TERM],[@[admit_term]],data[GRAD_YEAR],[@[cohort_student_year]], data[ADMIT_TYPE],"F")

=IF(ISNUMBER(FIND("First Year",[@[student_year]])), 0, SUM([@[grad_count_ftic_by_student_year]],K1))

student_year    grad_count_ftic_(...)_year    cumulative_grad_ftic
First Year      0                             0
Second Year     0                             0
Third Year      1                             1
Fourth Year     114                           115
Fifth Year      15                            129
Sixth Year      4                             133

grad_count_ftic_by_student_year    cumulative_grad_ftic
0                                  0
0                                  0
0                                  0
1                                  1
114                                115
14                                 128