According to the current consistent rates of cost savings, which you can look up by looking at past prices for EVs, we should reach a crossover point for EVs in around 2025.

In other words by 2025 manufacturers will be selling EVs at the same initial price as ICE cars. From there economics will take over along with exponential growth with the majority of car sales in the west being EVs from that point. Getting to 100% will probably take another few years as struggling traditional manufacturers try to flog over produced ICE vehicles or ship them to the third world.