I appreciate your assistance.
I appreciate your valuable efforts.
I appreciate all your help.
At any rate, I would like to thank you all.
I appreciate your hard work.
I deeply appreciate what you have done for me.
I always appreciate having your cooperation.
I am very grateful to you for your help.
I'm very grateful to you for your help.
I appreciate your actions.
I appreciate your hard work.
I appreciate your considerable efforts.
We would like to sincerely thank all of you.