Sentence in question:
The total amount of donation in 2010 has surpassed that of in 1990.
Can you use "that of" as a tool to compare the difference in volume of a same thing in different years?
Sentence in question:
The total amount of donation in 2010 has surpassed that of in 1990.
Can you use "that of" as a tool to compare the difference in volume of a same thing in different years?
Yes, but the use of "that of" is not limited to be used only for a comparison of something in different years or even time. Examples:
Old English grammar is more complicated than that of Modern English.
As a teacher, his salary is even less than that of a driver.