Suppose revenue from the sale of new homes in a certain country decreased dramatically from 2005 to 2010 as shown in the model r (t)＝413e⁻⁰,³²⁵ᵗ billion dollars per year (0 ≤ t ≤ 5), where t is the year since 2005. If this trend were to have continued into the indefinite future, estimate the total revenue from the sale of new homes in the country from 2005 on.

(Round your answer to the nearest billion dollars.)