I have mentioned below, the number of candidates that appeared for the various UGC NET cycles from December 2017 to June 2021.
Dec 2017 – 700000  June 2018 – 859498  Dec 2018 – 681930  June 2019 – 942000  Dec 2019 – 793813
June 2020 – 526707  Dec 2020 & June 2021 Merged Cycle- 6,71,288