The number of concurrent users of a social networking site has increased dramatically since 2005. By 2014, this social networking site could connect concurrently 70 million users online. The function P(t)=2.806(1.489)t, where t is the number of years after 2005, models this increase in millions of users.

Estimate the number of users of this site that could be online concurrently in 2006, in 2010, and in 2013.

(Round to the nearest wholenumber.)