This is per Accounting Today by way of the Rosenberg Survey:
Income per equity partner at the nation’s CPA firms jumped 5.5 percent in 2012, climbing to $386,000, according to the recently released 2013 Rosenberg MAP Survey.
If you have an extra $450 sitting around gathering dust, you can pick up your own copy of the survey. Since you are likely not a filthy rich partner, you can sit around and complain about how unfair life is in the comment section instead.