The table below shows the quantity demanded and supplied in the labor market for economics professors at the l'MaStateUniversity, where all the professors belong to a union.

$\backslash$table$[[$Annual Salary,$\backslash$table$[[$Quantity of workers$],[$demanded$]],\backslash$table$[[$Quantity of workers$],[$supplied$]]],[$$$50,000,95,20],[$$$60,000,80,30],[$$$$70,000,65,40],[$$$80,000,50,50],[$$$$90,000,35,60],[100,000,20,70]]$

If no union existed, the equilibrium salary for economics professors will be