There have been changes to the number of businesses that fall into each sector over the years. Also, the amount of money earned by each sector has changed over recent years. There has been a movement away from primary and secondary industries towards the tertiary sector. The pie charts below show how the tertiary sector has earned more money over the years.
The same trend has occurred when we look at the number of people employed in each of the sectors. More and more people now rely on the tertiary sector for their job.
