Some ecologists divided a female bird population into three categories juvenile up to 1 yr old subadult 1 to 2 yr old and adult over 2 yr old They concluded hat the change in the makeup of the bird population in successive years could be described by the matrix equation below The numbers in the column matrices give the numbers of females in the three age groups after n years and n 1 years n 1 Sn 1 an 1 0 0 31 0 0 0 0 72 0 95 0 0 20 In Sn an a Suppose there are currently 920 juveniles 280 subadults and 2800 adults Determine the total number of female birds for each of the next 5 years In the first year there will be female birds Do not round until the final answer Then round to the nearest whole number as needed