Collision energy dependence of the charged-particle pseudorapidity density at midrapidity ($|\eta|0.5$) normalised to the average number of participants, \dNdetape. Data from central \AA\ collisions  are compared to measurements in non-single diffractive p(d)A collisions  and inelastic (INEL) \pp\ and \ppbar collisions . ALICE heavy-ion data include \PbPb\ collisions at \sqrtSnn = 2.76 TeV and 5.02 TeV as well as \XeXe\ collisions at \sqrtSnn = 5.44 TeV. All values of \avNpart\ used for the normalisation of the data are the results of Glauber model calculations. The lines are power law fits to the data and the bands represent the uncertainties on the extracted dependencies.