Due to the concerns raised about the quality of the estimates and the important policy decisions being made at the time, Statistics NZ reviewed the measurement of the household saving rate and in 2010 a number of methodological improvements were made. In 2005 the household saving rate was first estimated at –15 percent. The current estimate for 2005 is now –6 percent.
9  There is a considerable amount of debate internationally regarding how value added is calculated for the Finance industry. At present measures do not adjust for the level of risk taken on by the industry. Some statisticians argue that value added should be risk adjusted and that this would significantly reduce the contribution of the finance industry to GDP in some countries.