jmccormac - 3:17 pm on Aug 8, 2011 (gmt 0)
The percentage of unique domains in the gTLDs varies but it is often related to pricing. Some of the ccTLDs can have 15 to 30% unique depending on the maturity of the ccTLD. The number of unique .com domains is 80,007,686. Some of them would have their equivalents in ccTLDs.