thank you vs I can't thank you all enough

Some examples from the web:

• And-And thank you for your steadfast support.
• Yes, thank you very much.
• I wanted to thank you for bringing the kids back.
• Elvira, I wanted to say thank you.
• And thank you for preventing bloodshed earlier.
• Mr Commissioner, thank you for your speech.
• The Commerce Department wanted thank you for helping Durmant Gas.
• Guys, we thank you for your help.
• Quickly and easily create your ClickBank thank you page.
• So thank you for getting that message out there.
• Let me thank you again for that.
• Mr President, thank you for upholding gender equality.
• Well, thank you, sir.
• That is my personal space thank you.
• We thank you for your patience.
• Your subscription request is successful, thank you.
• We thank you for your explanation.
• On behalf of the department, thank you.
• No, but thank you for the great early birthday present.
• But thank you for your concern, Aaron.

Some examples from the web:

• I can't thank you all enough for providing such a great experience!!!!!" – Lisa Burns (Facebook review from March 2015). “Great place: I never liked bowling until I ...
• Each one of the staff members who were there while I was in the program touched my life in a special way and I can't thank you all enough for your support and ...
• I can't thank you all enough. Thanks so much again. Take care, Erin S., Lemont, Age 14. Dear Dr. Booth,. Thank you so much! You and your staff made having ...
• Nov 26, 2015 ... #happythanksgiving I can't thank you all enough for ... #happythanksgiving I can't thank you all enough for your support and love you ...