No era has the number or retirements like the industry is facing today.
Approx. 47,000 in the industry with 16,500 retirements at the majors/LCC's in the next 8.5 yrs (Deutsche Bank Aviation Research data).
Even a 15% reduction (large furlough cycle percentage) tomorrow would be eaten up by retirements in the next 3.5-4 yrs.