Formula 2: added value = output value including tax * added value rate
Formula 3: Tax-included output value = added value/added value rate.
Generally, the Bureau of Statistics only publishes the added value of the primary, secondary and tertiary industries, and does not publish its output value. If the output value is published, the value-added rate can be calculated according to the previous formula (formula 1).
There is some information about the value-added rate on the Internet. The primary industry is about 50%, the secondary industry is about 25%, and the tertiary industry is about 50%.
Based on these data, the total output value can be roughly calculated (Equation 3).