The chart illustrates the number of minutes, measured in billions, spent on three types of phone calls by Australian citizens between 2001 and 2008.
Overall, it can be clearly seen that local calls accounted for the highest proportion of call usage throughout the period, while mobile calls were the least used at the beginning. However, mobile phone usage rose significantly over time, whereas local call usage showed a downward trend after reaching a peak.
Regarding mobile calls, the time spent increased sharply from only 2 billion minutes in 2001 to 46 billion minutes in 2008. Similarly, national and international calls experienced a steady but moderate rise across the years, increasing gradually without major fluctuations.
In contrast, local calls initially increased and reached their highest point in 2005 before declining steadily towards the end of the period. Despite this decrease, local calls remained the most widely used type of communication overall.
