School year is used as referenceperiod. This means, that there is only data uptill July included for the latest calender year. A school year is defined as 1. July the previous year til 30. June this year. Re. GIF: Up till 2009/ 2010 only Danish and History are included, thereafter all subjects. Only GSK taken at VUC is included, while GSK at i.e. business schools will be published later. For documentation follow this link (in danish): http://www.dst.dk/ext/uddannelse/Uddannelsestabeller.