So quite a bit more, 1.14% of the 2018 US market for Tesla, that is quite the achievement. For one, the market for gasoline just shrinked as much...
Increasing that level in 2019 will be tough though, a big part of model 3 production will now go oversees. At 400k for the year and about half for the US the increase will be small, but the total market is likely to shrink ;-)
So how much in 2019? 1.3% tops.