What (a) is the total number of learners who are not funded by National Students Financial Aid Scheme (NSFAS) for the 2021 academic year, (b) number of students have been funded by NSFAS for the 2021 academic year, (c) is the total number of students who have enrolled in each institution of higher learning for the 2021 academic year and (d) number of students have been financially excluded for the 2021 academic year?`