Its possible that Bitcoin usage would keep increasing every year if people are becoming aware of it. Bitcoin has so many benefits that I think most people would like to enjoy if they are aware of it. But a bullish market or price seems to be the biggest form of attracting for Bitcoin investors or users. Most people don't like investing or using Bitcoin when the price is dropping because of the fear of the unknown. They prefer buying it at a very high price hoping that the price would keep increasing.
Developing nations that have a high population of unbanked people might be a very good target for Bitcoin education or awareness. But these individuals also face other challenges such as lack of access to electricity, mobile phone, internet, and some of them are suffering from poverty. But i am sure that Bitcoin awareness and education is one of the most potent tool that would help in the increase of Bitcoin adoption.