Looking on the internet deeply has found these results:

it has been is the most popular phrase on the web.

it's been 117,700,000 results on the web	it has been 11,210,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
May 14, 2015 ... To my knowledge, the 2nd one should be grammatically correct but often hear the 1st one "It's been a while since I've ~". Which one do you ... May 17, 2008 ... And it's been awhile. Since I've gone and fucked things up. Just like I always do. And it's been awhile. But all that shit seems to disappear "It's Been Awhile" is a power ballad by alternative metal band Staind. It was released in March 2001 as the lead single from their album, Break the Cycle. So far as I know, this is the first time as here you've been, since it's been known as the bailiff's in the house; and I was here yesterday, and looked at all Bessy's ...	Do not use Aranesp if you think it has been frozen. Your life as it has been is over. I have kept your secret, and it has been really tough. Finally, it has been established that this phenomenon is often closely linked to organised crime. Although this vessel is Cardassian in design, it has been appropriated by the Maquis. But it has been a useful debate which has reflected the importance of the subject. It was very successful and it has been a pleasure working with the presidency. I must know that it has been consummated.

it's been

117,700,000 results on the web

it has been

11,210,000,000 results on the web

More popular!

May 14, 2015 ... To my knowledge, the 2nd one should be grammatically correct but often hear the 1st one "It's been a while since I've ~". Which one do you ...
May 17, 2008 ... And it's been awhile. Since I've gone and fucked things up. Just like I always do. And it's been awhile. But all that shit seems to disappear
"It's Been Awhile" is a power ballad by alternative metal band Staind. It was released in March 2001 as the lead single from their album, Break the Cycle.
So far as I know, this is the first time as here you've been, since it's been known as the bailiff's in the house; and I was here yesterday, and looked at all Bessy's ...

Do not use Aranesp if you think it has been frozen.
Your life as it has been is over.
I have kept your secret, and it has been really tough.
Finally, it has been established that this phenomenon is often closely linked to organised crime.
Although this vessel is Cardassian in design, it has been appropriated by the Maquis.
But it has been a useful debate which has reflected the importance of the subject.
It was very successful and it has been a pleasure working with the presidency.
I must know that it has been consummated.