When will a plug-in car break into the top 20 of US car sales?

Question Title

1. When will a plug-in car break into the top 20 of monthly US car sales? (Required.)

2015

2016

2017

2018

2019

2020

2021

I'm a pessimistic person

Question Title

2. Will the first plug-in car to break into the top 20 of US car sales be 100% electric or a PHEV/EREV/BEVx? (Required.)

100% electric

PHEV/EREV/BEVx