https://www.boldmethod.com/blog/lists/2021/07/ten-things-you-should-know-about-the-busiest-control-tower-in-the-world-oshkosh/

Arrivals are up. Way up. When Wittman Field closed Sunday evening, 7,920 aircraft had parked and tied down. Average years in the past saw about 5,000 aircraft parked here by Sunday evening. EAA President Jack Pelton says a lot of people finished up airplane projects or got their airplanes modernized during the downtime, enabling— – and motivating— – their attendance at AirVenture 2021.