21 the percentage remainede steady at...
22 the percentage of ...is sightly large than that of.
23 there is not a great deal of differece between ...and ...
24 the graphs show a three fold increase in the number of ...
25 ...decreased year by year while ...increased steadily.
26 there is an upward trend in the number of ...
27 a considerable increase occurred from ...to ...
28 from ...to ...the rate of decrease slow down.
29 from this year on,there was a gradual declinereduction in the ...reaching a figure of.
30 be similar to ...be the same as
31 there are a lot similarities between ...and ...
32 the difference between X and Y lies in ...