that would certainly seem to be the case.

20+ years ago participation in euro elections and enthusiasm for the EU started in the high sixities percentage wise.

after 20+ years of creeping federalism, participation in euro elections and enthusiasm for the EU sits in the low thirties.

correlation much?
Thats wierd , in your country voter turnout has remained around the same the euro elections and declined in the national elections.
Though 10 years ago Britain did get a one off big drop in turnout that would put them on the same level as the new eastern european countries this time round