In 1970 there 300 million passengers transported in a plane. In 2018 it was 4.2 billion. The future is that vastly many more people fly in a plane every year a

In 1970 there 300 million passengers transported in a plane. In 2018 it was 4.2 billion. The future is that vastly many more people fly in a plane every year and it's much, much cheaper than it was in 1970. https://data.worldbank.org/indicator/IS.AIR.PSGR https://data.worldbank.org/indicator/IS.AIR.PSGR