How to find exponential regression in TI-83

Use TI-83 graphical calculator, first enter the values of years in L1 and population (in thousands) in L2 in the calculator:

Consider the following table:

Then, plot the graph as below:

Use exponential regression as follow:

Now, use exponential regression to find out the exponential formula:

 

Hence, exponential model is \({y = 7.7997802519 \times {{1.10250888}^x}}\).