cool statistics

i like to play a bit with numbers, and i'm happy that oecd has renewed their services, you can find it here.
what you think, which are the most opened economies in oecd?
Country Trade-to-GDP-ratio (trade of goods)
(current prices, current exchange rate)
Slovak Republic 157,38
Hungary 132,67
Czech Republic 130,71
Netherlands 110,13
Luxembourg 87,51
Austria 81,13
Ireland 80,89
Switzerland 75,34
Korea 71,42
Germany 71,24
Poland 70,67
....
Japan 26,29
United States 22,16