Final answer:
The population next year can be calculated using the average annual growth rate. The number of births and deaths cannot be determined without more information.
Step-by-step explanation:
To find the population next year, we can calculate the average annual growth rate and apply it to the current population. We can calculate the average annual growth rate by finding the difference between the current population and the population 5 years ago, and dividing it by 5. In this case, the difference is 43,800 - 36,000 = 7,800. So, the average annual growth rate is 7,800 / 5 = 1,560. To find the population next year, we can add the average annual growth rate to the current population. If the current population is 20 million, next year's population will be 20 million + 1,560 = 20,001,560 people.
To calculate the number of people born and the number of people who died during the year, we need more information. Without that information, we cannot determine the exact number of births and deaths.