In the period 1965 to 2003, the rate of increase of health care spending in a country was approximately K(t), where t is the number of years since 1990. K(t) = 36.6t² +6,790t + 99,000 million dollars per year Estimate the increase in health care spending in the country from 1980 to 2000 using a Riemann sum with 100 rectangles. (Round your answer to the nearest 10,000 million dollars.) million dollars Thus, health care spending in the country rose by approximately million dollars from the year to 2000.