I have been using SAP NetWeaver since 2017. So, it has been six years. I am not a customer but a part of an organization using the solution. Also, I am using SAP NetWeaver 7.4.

I have worked with SAP NetWeaver in the past. It's part of the landscape.

I don't recall, what version was being used.

I have been using it for three years. 

I have been using the solution for seven years.

I have used SAP NetWeaver within the last 12 months.

I've been working with SAP NetWeaver for six months.

I have been using SAP for about five years.

We have been using SAP NetWeaver for more than 15 years. At present, we are using the latest version.

We have been using the solution for approximately 20 years.

I've worked with SAP NetWeaver for more than ten years, and I've had customers on SAP NetWeaver within the last twelve months.

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

I've been using the solution for four years.

I have been using SAP NetWeaver for five to six years. 

We have been working with SAP NetWeaver for about fifteen years.