The graph represents the data of the last ten years, which describes the enrolments of overseas students and local students pictorially in a chart. There are two graphs, one represents the enrolement of overseas students while the other represents the enrolment of local students.
The noticeable difference can easily be analyzed by comparing these two types of students. In 2001, 20000 international students were enrolled out of which 10000 commenced the classes in Australian universities, which gradually increased to 80000 students by the end of 2010. Around 40000 students commenced the classes in Australian universities in 2010.
Whereas, about 40000 local students were enrolled in 2010, which is two times more than the number of international students that were enrolled in 2010. But only about 20000 commenced the classes, which is still significantly higher than the number of international students. The local students gradually increased by 2007 and then remained almost equal in the next 3 years. The number commencing students fluctuated throught these years. But on the other hand, the number of oversease students continuously raised to 40000 in 10 years.
Let me conclude the topic with just a few words, that the number of international students made a great difference as compared to the locals. 
The graph represents the data of the last ten years, which  
describes
 the  
enrolments
 of overseas  
students
 and  
local
  students
  pictorially
 in a chart. There are two graphs, one represents the  
enrolement
 of overseas  
students
 while the other represents the  
enrolment
 of  
local
 students.
The noticeable difference can  
easily
  be analyzed
 by comparing these two types of  
students
. In 2001, 20000  
international
  students
  were enrolled
 out of which 10000 commenced the classes in Australian universities, which  
gradually
 increased to 80000  
students
 by the  
end
 of 2010. Around 40000  
students
 commenced the classes in Australian universities in 2010.
Whereas, about 40000  
local
  students
  were enrolled
 in 2010, which is two times more than the  
number
 of  
international
  students
 that  
were enrolled
 in 2010.  
But
  only
 about 20000 commenced the classes, which is  
still
  significantly
 higher than the  
number
 of  
international
  students
. The  
local
  students
  gradually
 increased by 2007 and then remained almost equal in the  
next
 3 years. The  
number
 commencing  
students
 fluctuated  
throught
 these years.  
But
  on the other hand
, the  
number
 of  
oversease
  students
  continuously
 raised to 40000 in 10 years. 
Let
 me conclude the topic with  
just
 a few words, that the  
number
 of  
international
  students
 made a great difference as compared to the  
locals
.