The demographics in the attached spreadsheet are taken from the 2012 Single Sports Participation Report for Billiards/Pool. The report is from SGMA (Sporting Goods Manufacturers Association.)( Link to the report )
As of 06/29/2018, Current S&P 500 PE Ratio: 24.94 +0.22 (0.90%)( Link to the website. )
Enter different numbers and watch the value of the stock change.