Macrosoft Data Entertainment (MacDatEE) develops software systems for the sports and entertainment market. The company implemented a quality system in late 2014 and has been tracking its quality related costs since 2015. The following is the accumulated data from the past 5 years.

			Year
	2015	2016	2017	2018	2019
All figures in $ 000s
Prevention	30	80	250	300	400
Appraisal	340	300	240	200	120
Internal Failure	350	420	320	210	140
External Failure	1,400	1,100	920	870	680
Sales	27,000	26,000	30,000	33,000	39,000
Total Costs*	25,000	25,200	27,000	29,000	30,200
Lines of Code Produced (in millions)	1.01	1.00	1.11	1.21	1.30
Code lines with first pass error++	0.11	0.18	0.15	0.12	0.09

* Total Costs: All costs related to the business

++ Lines of code that are not error free on first verification (in millions)

Question 1 (10 marks)

Compute the companys total failure cost as a percentage of total quality costs for each of the five years. Interpret the data (look for trends) and speculate on could be potential causes.