The number of Americans aged 45 to 54 (which stood at 25 million at the beginning of 1990) grew at the rate of this equation: R(t) = 0.00933t3+0.019t2-0.10833t+1.3467 (in million people/year, t years from the beginning of 1990). How many Americans aged 45 to 54 were added to the population between 1990 and the year 1999? Give your answer to one decimal place.

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