The provided line graph illustrates the average usage of Twitter and Facebook across one week, over a period of five years in Australia. It is clearly evident from the graph that, initially both the apps shown a similar usage per person, and then over the following years represents opposite usage trend. Ultimately, again they reached at almost common usage level after five years.
To elaborate in more detail, there is a marginal difference in the usage of both Facebook and Twitter, with 23 and 21 times per week respectively, in the year 2012. Further, Facebook maintains its popularity among people and over the following years its average usage gradually increases, with 24 times in 2013, 30 times in 2014, 31 times in 2015 and peaked at 33 in 2016.
On the other hand, Twitter shows a downfall trend among its usage, after the year 2012. Further, it usage gets flat bottomed after the year 2013, where the usage remains between 11 to 14, per week. In the year 2015, Twitter usage sky-rocketed, and outperforms facebook with 35 views per person, across one week.