Statically the majority. Supermarkets are selling a bag per about 100 in purchases. From that you can deduce that the majority of people are only using them a few times.

UK supermarkets sold 1.5 billion reusable bags in 2019. That is 57 per household per year.

https://www.cnn.com/2023/03/13/world/reusable-grocery-bags-cotton-plastic-scn/index.html