句子通順嗎?文法對嗎？

The xxx service will be terminated as its utilization rates
were too low over the past year.
大至上沒什不對, 如勉強要改:
The xxx service will soon be terminated since its utilization rate were too low last year(往年) (or, over the passed years 多年來)

its轉為the會好一點,over轉為in也可以(我認為不轉over也好)。