Redshift evolution of X_LAE in the bright and faint populations, split at M₁₅₀₀ = −18. The bright and faint populations are shown in blue and orange, and the completeness corrections in grey scale with the bright population in darker grey. The top panel corresponds to LAEs with EW_Lyα > 25 Å, while the lower panel shows the results when this limit is removed. The absence of the EW limit leads to a clearer separation between the two populations, suggesting that UV-bright LBGs exhibit a larger fraction of objects with Lyman-α emission when objects with small values of EW_Lyα are taken into account. In the lower panel the UV-bright completeness-corrected point at z ∼ 5, omitted from the plot, is at 1.19 (see the main text).