Upper panels: total AGN HGMF with the associated errors in three redshift bins derived through the maximum likelihood (black line and gray shaded area) and the V_max (data points) methods. In each bin the lowest z fit is reported for reference with a dashed line. The red and blue lines are the total and the star-forming galaxy stellar mass functions with the associated errors (shown in magenta and cyan shaded areas) from Ilbert et al. (2013). Lower panels: ratio of AGN host galaxies to the total (red line) and the star-forming (blue line) galaxy population as a function of stellar mass in the same redshift bins.