The clustered bar graph illustrates the total proportions of minutes of telephone calls in Australia, divided into three categories, between 2001 and 2008.
Overall, it is evident that local land line accounted for the largest percentage, throughout the analyzed period, while mobile calls showd significant growth despite starting with low level. Furthermore, national and international line experiensed an upward trend.
The amount of local calls was 72 in 2001, reaching its highest point at 90 in 2005. After that, the figures started having a decline until the and of the period to 72 in 2008 and it was the same as its starting value. This demonstrates fluctuated statictis across the observation period.
Regarding national and international, and mobile calls,the proportions were gradually increasing over the all periods. The figures for both of them started at 38 and 2, respectively. Over the subsequent seven years, the proportions national and international and mobile calls notably surged, reaching 61 and 46, respectively. In comparison of others mobile users rose steadily until 2000. It was approximately 25 billion calls and then rocketed for the next year to below 40. The figures highest number was close to 45 billion minutes in 2002.