2005年ですが。

Germany (top 5)
Google.de – 82.60%
Google.com – 6.44%
Yahoo – 4.32%
Google.co.uk – 1.15%
MSN.de – 0.94%

Denmark (top 5)
Google.dk – 64.70%
Google.com – 17.32%
Yahoo – 4.94%
MSN.dk – 4.35%
Jubii – 1.85%

Norway (top 5)
Google.no – 45%
Google.com – 22.72%
Yahoo – 7.55%
MSN.no – 7.03%
Kvasir – 5.86%

Sweden (top 5)
Google.se – 60.22%
Google.com – 13.92%
MSN.se – 4.19%
Eniro – 4.19%
Yahoo – 3.72%

だそうです。