We present our estimates of the Bjorken energy density in 0-5% centrality classes events in a broad range of heavy-ion collision energies (from SPS to the LHC) using the available experimental information on mean multiplicity of charged particles and mean transverse momenta. We make the analytical aproximation of the updated Bjorken energy excitation function, obtained in our study for these very central A-A collisions, and we compare
it to the previously obtained ones. We present also and discuss the relevant energy dependences of pion, kaon and proton contributions to the Bjorken energy density that are also estimated in our study.