Assign initial to an array that contains the population for every five year interval from $1970$ to $2010.$ Then, assign changed to an array that contains the population for every five year interval from $1975$ to $2015.$ You should use the b$\_$five table to create both arrays, first filtering the table to only contain the relevant years.

We have provided the code below that uses initial and changed in order to add a column to b$\_$five called annual$\_$growth. Don't worry about the calculation of the growth rates; run the test below to test your solution.

If you are interested in how we came up with the formula for growth rates, consult the growth rates section of the textbook.