Google+ is adding 625,000 new users each day, Google’s vice president of product Bradley Horowitz said today. Google+ would have nearly 300 million users by the end of 2012 if it continues to at least grow at 625,000 new users each day. The site now has more than 62 million users, but that growth is accelerating.

Here is what the tracking shows so far:

July 13 –           10 million
August 1 –        20.5 million
September 1 –  24.7 million
October 1 –      38 million (Larry Page announced “more than 40m users on Oct 13th)
November 1 –   43 million
December 1 –   50 million
December 27 – 62 million

What is really remarkable is that nearly 1/4th of all Google+ users (24.01% to be precise) will have joined in December alone.

If this rate of new signups (625k daily) continues then Google+ will reach 100 million users on Feb. 25th and 200 million users on August 3. They will finish 2012 with 293 million users.

2012 is going to be a breakout year for Google+ and that it will end next year with more than 400 million users.