This is likely due to pent up demand, but it does show that Tesla's absolute domination of the US market hasn't played out in Europe.
If you're interested in widespread EV adoption, this is probably ideal. It's concerning to me that Tesla may have so much mind share that even genuine competitors once they arrive will struggle to sell enough to be profitable.
In which case, the steady state will be legacy auto makers doing the bare minimum as required under emissions legislation. In the EU that's probably ok, but not in the US.
Norway 2019 sales for reference:
Model 3: 10976 VW Golf: 6533 Leaf: 5441 BMW i3: 3671 E-Tron: 3114 I-Pace: 2372 IONIQ: 2168 Zoe: 1775 Model X: 1344 Model S: 969
Now, add to that the model 3 outselling the Model S by a factor of 11 to 1 this year, that is amazing.
But it's more than a little disingenuous to compare cars from different segments.