1990년대에는 설비 투자증가율과 GDP 성장률 간의 상관계수가 0.828이었으나 2000년대에는 0.559로 낮아졌다.
In 1990, the correlation coefficient between the growth rate of facility investment and the GDP growth rate was 0.828, but in 2000 it decreased to 0.559.