France, June 16 -- Emerging markets, with expanding middle classes, dynamic and competitive airline networks and sustained aviation investment, will play an outsized role in global air traffic growth, helping drive a need for 43,600 commercial airplanes over the next 20 years, Boeing [NYSE: BA] projected today.These markets will represent over 50% of the global commercial fleet in 2044, up from nearly 40% in 2024. Ahead of the Paris Air Show, Boeing released its 2025 Commercial Market Outlook (CMO), which also predicts airplane supply will catch up with market demand around the end of the decade, enabling carriers to increasingly renew and grow their fleets. CMO forecast highlights through 2044:Passenger traffic is forecast to grow 4.2% ann...