Looking on the internet deeply has found these results:

i am grateful is the most popular phrase on the web.

i greatly appreciate it 123,900 results on the web	i am grateful 123,300,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Thank you to my followers I greatly appreciate it ! Hope we pin more great pins this up coming 2015 year!!! ~ xoxoxo. More�... Natalie . Thanks for your assistance. I greatly appreciate it. Please review one last time. Kevin. Show more. Christmas Letter Jan 10, 2010 ... I see "very much" as adverbial. So I believe the argument comes down to whether or not you approve of the phrase "I greatly appreciate it". I greatly appreciate it and am honored to have been selected. I look forward to beginning my college career at Central Community College and this award will. 2015.docx (locked)�...	Mr Cashman, I am grateful for that information. I am grateful we were able to hear from this very articulate young lady. I am grateful to the rapporteur for taking our comments on board in his excellent report. I am grateful to the rapporteur for his report. I am grateful you are here, Master Kenobi. I am grateful for my memories. I am grateful for his interest. I am grateful and consistently inspired by the compassionate and forthright leadership of president Roslin.

i greatly appreciate it

123,900 results on the web

i am grateful

123,300,000 results on the web

More popular!

Thank you to my followers I greatly appreciate it ! Hope we pin more great pins this up coming 2015 year!!! ~ xoxoxo. More�...
Natalie
. Thanks for your assistance. I greatly appreciate it. Please review one last time. Kevin. Show more. Christmas Letter
Jan 10, 2010 ... I see "very much" as adverbial. So I believe the argument comes down to whether or not you approve of the phrase "I greatly appreciate it".
I greatly appreciate it and am honored to have been selected. I look forward to beginning my college career at Central Community College and this award will.
2015.docx (locked)�...

Mr Cashman, I am grateful for that information.
I am grateful we were able to hear from this very articulate young lady.
I am grateful to the rapporteur for taking our comments on board in his excellent report.
I am grateful to the rapporteur for his report.
I am grateful you are here, Master Kenobi.
I am grateful for my memories.
I am grateful for his interest.
I am grateful and consistently inspired by the compassionate and forthright leadership of president Roslin.