Europe has a long history of anti semitism, some of the cases as seen on a post on r/dataisbeautiful are: Crimea 1016
Silesia 1159
France 1182
England and Wales 1290
France again 1306 , 1321 and 1394
Germany 1348
Hungary 1349 and 1360
Crimea again 1350
Austria 1421
Provence 1430
Lithuania 1445 and 1495
Spain, Sardinia and Naples 1492
Silesia again 1494
Portugal 1497
Germany again 1510 and 1551
Now I’m not suggesting that there is a simple answer as these events happen across hundreds of years, but there is a very clear trend here, if anyone had studied this trend or just some of the cases individually I would appreciate if you would shed some light as to why European kings and queens kept doing this.
Edit: apologies, the image was from r/Europe
Are you asking about the 20th century as your title states, or about the medieval Europe?
The very first entry in the list of unsourced dates that you posted is false - 1016 is the year the Khazars were defeated in Crimea. The Khazars cannot be equated with the Jews as at most only their elites converted to Judaism (indeed, if at all, on which see this peer-reviewed research: https://www.jstor.org/stable/10.2979/jewisocistud.19.3.1?seq=1 ) and according to most contemporary sources, as well as modern archaeological research, most Khazars were non-Jews.
But even if one were to accept the opposite, the end of the Khazar rule simply doesn't equate to expelling the Jews as such, this is a normal story of a power struggle between states and as such is not related to the later cases of expelling the Jews from Europe due to antisemitism.
So that list is not credible, which is not to say that Jews were not expelled from time to time, one of the most common explanations being the religious antisemitism, especially the kind used by various kings as a cover to get rid of their debts. Pay back a hefty sum or accuse the Jewish community of drinking the blood of Christian children? It was too often a no-brainer for the royalty and the "nobles".