I have been working with Microsoft products for between 25 and 30 years.

Since I started working with Microsoft, one of the tools that we began with was Excel. Then we started with Word and have always been using these tools. Then, I jumped for BI, and after that, we started to use SharePoint for other things.

I've been using this solution for five years. 

I have been using Microsoft Office SharePoint Server for seven years.

I have been using this system for what seems like forever. I have been with this company for two years now and before this, I was using SharePoint.

We have been using SharePoint for a pretty long time. It has been around somewhere between five and ten years.  

I have been using SharePoint for six years.

We implemented it three years ago.

We have been using this solution since 2015.

We are using SharePoint Server for more than nine years; started with 2007 version and made the upgrade to 2013 version in 2013.

We've been using the solution since 2007.

I've been using this solution for about six years. 

I've been using this solution for about four years. 

I have been using this SharePoint Server for five years.

We've been using this solution for eight years.

We have used this product for at least five years.