Google Insights shows stats on keywords that you enter and is a great tool for seeing trends. The tool is used by marketing people, webmasters and people related to the search engine optimization business.
Insights is available in 39 languages:: Bulgarian, Catalan, Simplified Chinese, Traditional Chinese, Croatian, Czech, Danish, Dutch, English (US, Australian and UK), Estonia, Filipino, Finnish, French, German, Greek, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Latvian, Lithuanian, Norwegian, Polish, Portuguese (Brazil and Portugal), Romanian, Russian, Slovak, Slovenian, Spanish, Swedish, Thai, Turkish, Ukranian and Vietnamese.