Top panel: cumulative number density of IR selected AGNs and of those with X-ray counterpart in the XMM-XXL north. We apply the IR selection threshold of Stern et al. (2012) and Assef et al. (2013). Bottom panel: X-ray detection fraction of IR selected AGNs: we divide the number of X-ray-detected WISE AGNs by all WISE-selected AGN in the XMM-XXL north.