The graph gives information about the number of people in Australia who used Chinese Arabic Italian or Greek as their first mother tongue Summarize the information by selecting and reporting the main features and make comparisons where relevant

The line graph illustrates information about four groups of speakers who uses languages other than English as their mother tongue from 1986 to 2011.
Overall, the number of native speakers of Chinese and Arabic experienced steady rises, with the figure for the former seeing the fastest growth. In addition, the number of Italian and Greek speakers saw a slight but steady decline.
Both Chinese and Arabic speakers increased in numbers. Specifically, the former rose from just over 100,000 in 1986 to about 350,000 in 2011, whilst the latter also saw an increase, albeit less pronounced, from 50,000 in 1986 to 150,000 in 2011.
Speakers of the two European languages, in the meantime, underwent opposite patterns. The number of people speaking Greek as their mother tongue fell gradually from around 225,000 in 1988 to about 175,000 in 2011. Similarly, Italian speakers also underwent a decrease of approximately 40,000 from 150,000, making Italian the least spoken language of the four after 2011.