BTW, Wrocław (Breslau) was just as Polish in 1900, as Vilnius (Wilno) was Lithuanian at that time.
Wrocław had 2,0% Poles (8,466 Poles out of 422,709 total population) in 1900
Vilnius had 2,0% Lithuanians (3,131 Lithuanians / 154,532 population) in 1897
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Percent and number of Lithuanians in the city of Wilno/Vilnius:
1897 - 2,0% (3,131 Lithuanians out of 154,532)
1916 - 2,6% (3,699 Lithuanians out of 140,890) ---> in Breslau there were 3,62% Poles in 1910
1917 - 2,1% (2,909 Lithuanians out of 138,787)
1931 - 0,8% (1,579 Lithuanians out of 195,021)
1959 - 33,6% (79,400 Lithuanians out of 236,100)
2001 - 57,5% (318,510 Lithuanians out of 553,904)
2011 - 63,2% (331,500 Lithuanians out of 524,566)