I have been using this solution for around 15 years.

I've been using the solution for a year.

I've been using the solution for more than ten years. I've used it since 2006. I started with version 7.

I have been using the tool for six years.

I have been using it for seven years now. 

I have been working with IBM InfoSphere DataStage for almost four years.

I have been using this solution for five years. 

I've been working with IBM InfoSphere DataStage for more than seven years.

I have been using IBM InfoSphere DataStage for five years. Also, I am using IBM InfoSphere DataStage Version 11.7. My company is a consultant for DataStage.

I have been using the solution for one year.

I’ve been using this solution since 2005. I’m currently using version 11.7.

I've been using the solution for about 12 years.

I have been using IBM InfoSphere DataStage for three years. I also used this solution for two years back in 2009-10.

I have been using the solution for six years. 

We have been using this solution for a couple of months.

I've been using the solution for four years. 

We have been providing IBM InfoSphere DataStage for one year.

I've worked with DataStage for about 9 years.

I have been working with IBM InfoSphere DataStage for seven years.

We have the 11.3 version but have recently migrated to the 11.7 version.

It was DataStage previously, and then it became InfoSphere. I have used DataStage for ten years and InfoSphere for one year.

We have been using IBM InfoSphere DataStage for 20 years. At present, we are using version 11.7.

I have more than 22 years of experience with many different products. 

It has been three to four years that we have been using IBM InfoSphere DataStage.

I have been using InfoSphere DataStage for almost eight years.

I've been using this solution for over 20 years. 

I've been using the product for more than two years. 

I have been using IBM Infosphere for 20 years.  

I've been using this product for 15 years. 

We've been using this solution for five or six years.

I've been using it for one year.

I've been using it as a customer for six years.