Study Figure 8b, a table showing actual and forecast global air passenger arrivals.
Figure 8b
| Actual 2005 | Actual 2015 | Forecast 2030 | Average annual growth rate (%) | |
|---|---|---|---|---|
| Global air passenger arrivals (millions) | 1918.0 | 3440.0 | 5600.0 | 4.3 |
State how the total number of global air passenger arrivals is forecast to change between 2015 and 2030.
