Energy dependence of $\langle{\pt}\rangle$ for K$^*$ (triangles) and $\phi$ (squares) in pp collisions. The points at lower energies are from STAR and PHENIX ($\sqrt{s}$=200 GeV), ALICE ($\sqrt{s}$=0.9 TeV) and E735 ($\sqrt{s}$=1.8 TeV). The STAR data have been slightly displaced to separate the K$^*$ and the $\phi$. The data point at 1.8 TeV represents the mean of the two values quoted from the E735 collaboration in [33], obtained from two different fit functions of the $\phi$ $\pt$ distribution.