Table 4: Average defect rates in US software projects, 1955-2015.

Year	Average Defect Removal %	Delivered Defects per Function Point
1955	80%	1.40
1965	83%	1.02
1975	85%	0.75
1985	87%	0.58
1995	90%	0.40
2005	92%	0.28
2015 (prediction)	96%	0.10