Global demand for air travel increased by 4.5 percent on an annual basis in May, following a revised 4.4 percent increase in April. That was reported by the IATA aviation association. According to IATA, demand remains solid, although it is below the long-term average. “The demand for air travel has weakened over the past two years. This is in line with the declining world trade, increasing trade tensions and a weakening business confidence,” explains Alexandre de Juniac of IATA. The occupancy rate of the passenger aircraft in May was on average 81.5 percent.