In each of the past three years for which information is available, how many people (a) entered artisan training through service level agreements with Setas, (b) have taken and passed the trade test, (c) who have completed trade-related learnerships at National Qualifications Framework levels 3 and 4 have (i) taken and (ii) passed the trade test in pursuance of the Joint Initiative on Priority Skills Acquisition (Jipsa) target of training 50 000 artisans by 2010?