I have been using the solution for five months. 

I have been using this solution for two years. 

I have been using Instana Dynamic APM for five years.

We have been using Instana Dynamic APM for one year.

We have been using the solution for two and a half years.

I have been working with it for almost ten years.

I've been using this solution for a few years. 

I have been using this solution for four or five years.

I've been using this solution for the last year.

I have been using Instana Dynamic APM for seven months.

I am using the latest version.

We have been using Instana for three months.