Based on earnings per shares and only going back to 2001… Here is the Wall Street Journal:
“The earnings-per-share of a FactSet index of over 20,000 listed companies from around the world has now reached an average of $9.69, increasing nearly 19% in the last year.
That is the fastest year-over-year rise since 2011, surpassing the late-2014 high of $9.55. While the FactSet data only stretch back to 2001, increased earnings in emerging markets like China, among other factors, mean that the per-share level has likely never been higher.”
And here is Citibank’s economic surprise index: