According to Alan Krueger, an economist at Princeton University, the share of concert ticket revenue received by

Question:

According to Alan Krueger, an economist at Princeton University, the share of concert ticket revenue received by the top 1 percent of all acts rose from 26 percent in 1982 to 56 percent in 2003. Does this information indicate that the top acts in 2003 must have been much better performers relative to other acts than was the case in 1982? If not, can you think of another explanation?