Likewise, Bubba

The case is not only of speaker percentage as much as of standard and anyone with ears can tell that standard(s) has/have declined immeasurably over the last decades.
Sure, purists rub people the wrong way. Sure, "standard" has become a dirty little word, misinterpreted by some and misused by faschistic types. Granted.
Nonetheless, it bugs me no end that North Europeans especially (including here Poles, by the way!) imagine their textbook English to be so good, that foreigners no longer need to learn their languages as they need to learn ours. On the whole, I will say, a large number of Europeans pride themselves on speaking fluent English.
However, fluency without accuracy is like icing without the cake (or vice-versa): It's an incomplete picture.
I readily admit my Polish is not accurate. I am though ALWAYS willing to be corrected.
Marek