Percentage of late-type galaxies as a function of detection level, based on the bulge to disk decomposition in the r^′ band. The data points are colour–coded in bins of redshift: black squares for z ≤ 0.2, red triangles for 0.2 <z ≤ 0.27, green circles for 0.27 <z ≤ 0.37, blue squares for 0.37 <z ≤ 0.47, magenta crosses for 0.47 <z ≤ 0.57, and orange stars for z> 0.57. The correction factors explained in the text have been applied.