The bar chart illustrates the total minutes spent on telephone calls in Australia between 2001 and 2008, categorised into local, national and international, and mobile calls.
Overall, the most significant trend is the dramatic increase in mobile call minutes, which overtook local calls by the end of the period. While local calls initially showed a slight increase, they ultimately declined, as did national and international calls, though to a lesser extent.
In 2001, local calls dominated the telecommunications landscape, accounting for 72 billion minutes, significantly higher than the 38 billion minutes for national and international calls and a mere 2 billion minutes for mobile calls. Over the next few years, local calls continued to rise, reaching a peak of 90 billion minutes in 2005. Conversely, national and international calls saw a steady, albeit slower, growth, reaching 50 billion minutes in the same year. Mobile calls, starting from a low base, experienced exponential growth, increasing to 12 billion minutes by 2005.
The latter half of the period witnessed a significant shift. Local calls began a downward trend, falling to 72 billion minutes by 2008, a level similar to that in 2001. National and international calls also experienced a modest increase, reaching 61 billion minutes in 2008. However, the most striking change was the surge in mobile call minutes, which soared from 12 billion in 2005 to 46 billion in 2008, surpassing both local and national/international call minutes in the final year of the survey.