The chart gives us an overall picture of the 图表主题.
The first thing we notice is that 图表最大特点 .
This means that as 进一步说明.
We can see from the statistics given that 图表细节
图表细节一 . After 动词-ing ：细节一中的第一个变化， the动词-ed+幅度+时间(紧跟着的变化) .
The figures also tell us that图表细节二 .
In the column, we can see that accounts for (进一步描述).
Judging from these figures, we can draw the conclusion that (结论).
The reason for this, as far as I am concerned is that (给出原因). b或是 It is high time that we (发出倡议).