WordStream did a post on the CPC trends around the world, definitely worth reading and bookmarking. The article gave data on 97 countries. It might surprise you which country has the highest CPC.
From the article:
The Most Expensive Country: United Arab Emirates
The nation with the highest CPCs (and the only country to have a higher CPC than the United States) is the United Arab Emirates, where CPCs average 8% more than they do within the US. A rich and diverse economy – which relies on industries such as finance and tourism, known for their high CPCs – likely helps to put the country at the top of the list.
The Top 10 Highest CPCs
Excluding the UAE and the US, the next ten most expensive countries (Austria, Australia, Brazil, the United Kingdom, New Zealand, Chile, Switzerland, Italy, Canada, and Germany) all either share strong economic ties to the US, have surging economies, have very high English-speaking populations, or some combination of several of these. Also, in all of these countries, Google acts nearly as a monopoly of search, with no significant competition from other search engines.
Read the full article on WordStream