The idiomatic expression "to increase experience" means to gain more knowledge or skill through practice, learning from mistakes and accumulating information over time. Full definition
Awareness and application of character strengths has been found to positive influence work and life satisfaction as well as increasing the experience of positive emotions among many other research studies which have taken place. (positivepsychologyprogram.com)
I would also expect minimum acceptable yield to increase with increasing experience, assuming the investor is getting closer to retirement. (dividendempire.com)
I have enjoyed this as it is not only increasing my experience in social media marketing and developing a blog, but also gets me out the office and watching some sport! (mmusportblog.com)