There are approximately 3,000 bass in a lake. The population grows at a rate of 2% per year. Round answers to the nearest tenth. From Year 1 to Year 4, the average rate of change of the population was about 62.4 bass per year.

From Year 5 to Year 8, the average rate of change of the population was about 67.6 bass per year.

The rate of change increased by about bass per a year.

(Please fill in the blank with the correct information.