The
referenced source from the wiki lists all the countries by their forested area (in thousand hectares), and in a handy spreadsheet no less. Add in the square km of the countries and you can calculate the percentages:
Country - percent - forested - total
Canada - 31.1% - 3,101,340 - 9,984,670
United States - 33.1% - 3,030,890 - 9,147,593
EU - 36.0% - 1,577,190 - 4,381,376
Austria - 46.1% - 38,620 - 83,855
Belgium - 21.8% - 6,670 - 30,528
Bulgaria - 32.7% - 36,250 - 110,994
Croatia - 37.7% - 21,350 - 56,594
Cyprus - 18.8% - 1,740 - 9,251
Czech Rep - 33.6% - 26,480 - 78,866
Denmark - 11.6% - 5,000 - 43,075
Estonia - 50.5% - 22,840 - 45,227
Finland - 66.5% - 225,000 - 338,424
France - 23.0% - 155,540 - 674,843
Germany - 31.0% - 110,760 - 357,021
Greece - 28.4% - 37,520 - 131,990
Hungary - 21.2% - 19,760 - 93,030
Ireland - 9.5% - 6,690 - 70,273
Italy - 33.1% - 99,790 - 301,338
Latvia - 45.5% - 29,410 - 64,589
Lithuania - 32.2% - 20,990 - 65,200 -
Luxembourg - 33.6% - 870 - 2,586
Malta - 0% - 0 - 316
Netherlands - 8.8% - 3,650 - 41,543
Poland - 29.4% - 91,920 - 312,685
Portugal - 40.9% - 37,830 - 92,390
Romania - 26.7% - 63,700 - 238,391
Slovakia - 39.3% - 19,290 - 49,035
Slovenia - 62.3% - 12,640 - 20,273
Spain - 35.5% - 179,150 - 504,030
Sweden - 61.2% - 275,280 - 449,964
United Kingdom - 11.7% - 28,450 - 243,610
The EU's percentage is skewed up by the Scandinavian, Baltic, and Slovakian countries. Though Germany, Spain, Portugul, Italy, and Austria are right around the EU average. Anyway, can we just drop this stupid penis measuring contest? It's close enough to call it a tie.